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are recyclable and reusable. GIGABYTE works with you to protect the environment.

For more product details, please visit GIGABYTE's website.

Z490 UDZ490 UD AC

Z490 UD AC

Z490 UD

User's Manual

Rev. 1001

12ME-Z49UD-1001R

The trademarks mentioned in this manual are legally registered to their respective owners.

Disclaimer

Information in this manual is protected by copyright laws and is the property of GIGABYTE.

Changes to the specications and features in this manual may be made by GIGABYTE

without prior notice.

No part of this manual may be reproduced, copied, translated, transmitted, or published in any

form or by any means without GIGABYTE's prior written permission.

In order to assist in the use of this product, carefully read the User's Manual.

For product-related information, check on our website at: https://www.gigabyte.com

Identifying Your Motherboard Revision

The revision number on your motherboard looks like this: "REV: X.X." For example, "REV:

1.0" means the revision of the motherboard is 1.0. Check your motherboard revision before

updating motherboard BIOS, drivers, or when looking for technical information.

Example:

- 3 -

Table of Contents

Z490 UD (AC) Motherboard Layout 4 .................................................................................

Chapter 1 Hardware Installation 5 .....................................................................................

1-1 Installation Precautions 5 ....................................................................................

1-2 ProductSpecications ...................................................................................... 6

1-3 Installing the CPU 9 ............................................................................................

1-4 Installing the Memory 9 .......................................................................................

1-5 Installing an Expansion Card 10 .........................................................................

1-6 Back Panel Connectors 10 ..................................................................................

1-7 Internal Connectors 12 ........................................................................................

Chapter 2 BIOS Setup 21 ..................................................................................................

2-1 Startup Screen 21 ...............................................................................................

2-2 The Main Menu 22 ..............................................................................................

2-3 Favorites (F11) 23 ...............................................................................................

2-4 Tweaker .......................................................................................................... 24

2-5 Settings .......................................................................................................... 29

2-6 System Info. 35 ...................................................................................................

2-7 Boot ................................................................................................................ 36

2-8 Save & Exit 39 .....................................................................................................

Chapter 3 Appendix 40 ......................................................................................................

3-1 ConguringaRAIDSet .................................................................................. 40

3-2 Installing an Intel® Optane™ Memory 42 ..............................................................

3-3 Drivers Installation 44 ..........................................................................................

RegulatoryNotices .................................................................................................... 45

Contact Us 48 ................................................................................................................

- 4 -

Z490 UD (AC) Motherboard Layout

* The box contents above are for reference only and the actual items shall depend on the product package you

obtain. The box contents are subject to change without notice.

Box Contents

5Z490 UD AC or Z490 UD Motherboard

5Motherboard driver disc 5Two SATA cables

5User's Manual 5One antennaj

KB_MS_USB

HDMI

U32

U32_LAN

LGA1200

ATX

AUDIO

ATX_12V_2X4

Intel® Z490

CLR_CMOS

M_BIOS

PCIEX1_1

PCIEX4

PCIEX16

PCIEX1_2

PCIEX1_3

F_U32

M2P_32G (Note)

CODEC

Z490 UD (AC)

F_PANELF_USB

LED_C1

F_AUDIO

COM SYS_FAN3

SPI_TPM

SYS_FAN1

SYS_FAN2

CPU_FAN

iTE®

Super I/O

SATA3 531

420

BAT

Realtek®

GbELAN

CPU DRAM

VGA BOOT

U32_G2

THB_C1

M2M_SB

426080

ATX_12V_2X2

DDR4_B1

DDR4_B2

DDR4_A1

DDR4_A2

D_LED2

LED_C2

QFLASH_PLUS

426080110

M2A_SB

SYS_FAN4D_LED1

SPDIF_O

CNVIj

(Note) TheM.2connectorisreservedonly.Nofunctionalities.

j Only for the Z490 UD AC.

QFLED

THB_C2

Chapter 1 Hardware Installation

1-1 Installation Precautions

The motherboard contains numerous delicate electronic circuits and components which can become

damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully read the user's

manual and follow these procedures:

•Prior to installation, make sure the chassis is suitable for the motherboard.

•Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or

warranty sticker provided by your dealer. These stickers are required for warranty validation.

•Always remove the AC power by unplugging the power cord from the power outlet before

installing or removing the motherboard or other hardware components.

•When connecting hardware components to the internal connectors on the motherboard, make

sure they are connected tightly and securely.

•When handling the motherboard, avoid touching any metal leads or connectors.

•It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic

components such as a motherboard, CPU or memory. If you do not have an ESD wrist strap,

keepyourhandsdryandrsttouchametalobjecttoeliminatestaticelectricity.

•Prior to installing the motherboard, please have it on top of an antistatic pad or within an

electrostatic shielding container.

•Before connecting or unplugging the power supply cable from the motherboard, make sure

the power supply has been turned off.

•Before turning on the power, make sure the power supply voltage has been set according to

the local voltage standard.

•Before using the product, please verify that all cables and power connectors of your hardware

components are connected.

•To prevent damage to the motherboard, do not allow screws to come in contact with the

motherboard circuit or its components.

•Make sure there are no leftover screws or metal components placed on the motherboard or

within the computer casing.

•Do not place the computer system on an uneven surface.

•Do not place the computer system in a high-temperature or wet environment.

•Turning on the computer power during the installation process can lead to damage to system

components as well as physical harm to the user.

•If you are uncertain about any installation steps or have a problem related to the use of the

product,pleaseconsultacertiedcomputertechnician.

•If you use an adapter, extension power cable, or power strip, ensure to consult with its installation

and/or grounding instructions.

- 5 -

j Only for the Z490 UD AC.

Storage Interface SupportforRAID0,RAID1,RAID5,andRAID10

* Referto"1-7InternalConnectors,"fortheinstallationnoticesfortheM.2andSATA

connectors.

Intel® Optane™MemoryReady

USB Chipset:

- 1 x USB 3.2 Gen 2 Type-A port (red) on the back panel

- 7 x USB 3.2 Gen 1 ports (5 ports on the back panel, 2 ports available through

the internal USB header)

- 4 x USB 2.0/1.1 ports (2 ports on the back panel, 2 ports available through

the internal USB header)

Internal

Connectors

1 x 24-pin ATX main power connector

1 x 4-pin ATX 12V power connector

1 x 8-pin ATX 12V power connector

1 x CPU fan header

4 x system fan headers

2 x addressable LED strip headers

2xRGBLEDstripheaders

1 x Q-Flash Plus button

6 x SATA 6Gb/s connectors

2 x M.2 Socket 3 connectors

1 x front panel header

1 x front panel audio header

1 x S/PDIF Out header

1 x USB 3.2 Gen 1 header

1 x USB 2.0/1.1 header

 1 x Trusted Platform Module header (For the GC-TPM2.0 SPI/GC-TPM2.0 SPI

2.0 module only)

2 x Thunderbolt™ add-in card connectors

1 x serial port header

1 x Clear CMOS jumper

Back Panel

Connectors

1 x PS/2 keyboard/mouse port

2xSMAantennaconnectors(1T1R)j

1 x HDMI port

1 x USB 3.2 Gen 2 Type-A port (red)

5 x USB 3.2 Gen 1 ports

2 x USB 2.0/1.1 ports

1xRJ-45port

3 x audio jacks

I/O Controller iTE® I/O Controller Chip

Hardware

Monitor

Voltage detection

Temperature detection

Fan speed detection

Overheating warning

Fan fail warning

Fan speed control

* Whether the fan speed control function is supported will depend on the cooler you

install.

- 7 -

BIOS 1x256Mbitash

Use of licensed AMI UEFI BIOS

PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0

Unique Features Support for APP Center

* Available applications in APP Center may vary by motherboard model.

Supported functions of each application may also vary depending on

motherboardspecications.

- @BIOS

- EasyTune

- Fast Boot

- Game Boost

- ON/OFFCharge

- RGBFusion

- Smart Backup

- System Information Viewer

Support for Q-Flash Plus

Support for Q-Flash

Support for Xpress Install

Bundled

Software

Norton® Internet Security (OEM version)

Realtek® 8118 Gaming LA Bandwidth Control UtilityN

Operating

System Support for Windows 10 64-bit

Form Factor ATX Form Factor; 30.5cm x 24.4cm

* GIGABYTEreservestherighttomakeanychangestotheproductspecicationsandproduct-relatedinformationwithout

prior notice.

Please visit GIGABYTE's website for support lists of CPU, memory modules,

SSDs, and M.2 devices.

Z490 UD AC Z490 UD

Please visit the page on GIGABYTE's website to download the latest Support\Utility List

version of apps.

- 8 -

1-3 Installing the CPU

1-4 Installing the Memory

Readthefollowingguidelinesbeforeyoubegintoinstallthememory:

•Make sure that the motherboard supports the memory. It is recommended that memory of the same

capacity, brand, speed, and chips be used.

(Go to GIGABYTE's website for the latest supported memory speeds and memory modules.)

•Always turn off the computer and unplug the power cord from the power outlet before installing the

memory to prevent hardware damage.

•Memory modules have a foolproof design. A memory module can be installed in only one direction.

If you are unable to insert the memory, switch the direction.

DualChannelMemoryConguration

This motherboard provides four memory sockets and supports Dual Channel Technology. After the memory

isinstalled,theBIOSwillautomaticallydetectthespecicationsandcapacityofthememory.EnablingDual

Channel memory mode will double the original memory bandwidth.

Please visit GIGABYTE's website for details on hardware installation.

ReadthefollowingguidelinesbeforeyoubegintoinstalltheCPU:

•Make sure that the motherboard supports the CPU.

(Go to GIGABYTE's website for the latest CPU support list.)

•Always turn off the computer and unplug the power cord from the power outlet before installing the

CPU to prevent hardware damage.

•Locate the pin one of the CPU. The CPU cannot be inserted if oriented incorrectly. (Or you may

locate the notches on both sides of the CPU and alignment keys on the CPU socket.)

•Apply an even and thin layer of thermal grease on the surface of the CPU.

•Do not turn on the computer if the CPU cooler is not installed, otherwise overheating and damage

of the CPU may occur.

•SettheCPUhostfrequencyinaccordancewiththeCPUspecications.Itisnotrecommended

thatthesystembusfrequencybesetbeyondhardwarespecicationssinceitdoesnotmeetthe

standard requirements for the peripherals. If you wish to set the frequency beyond the standard

specications,pleasedosoaccordingtoyourhardwarespecicationsincludingtheCPU,graphics

card, memory, hard drive, etc.

Installing the CPU

Locate the alignment keys on the motherboard CPU socket and the notches on the CPU.

Do not remove the CPU socket cover before inserting the CPU. It may pop off from the load

plate automatically during the process of re-engaging the lever after you insert the CPU.

Triangle Pin One Marking on the CPU

NotchNotch

LGA1200 CPU

Alignment

Key

Alignment

Key

LGA1200 CPU Socket

Pin One Corner of the CPU Socket

- 9 -

The four memory sockets are divided into two channels and each channel has two memory sockets as following:

ChannelA:DDR4_A1,DDR4_A2

ChannelB:DDR4_B1,DDR4_B2

RecommandedDualChannelMemoryConguration:

DDR4_A1 DDR4_A2 DDR4_B1 DDR4_B2

2 Modules - - DS/SS - - DS/SS

4 Modules DS/SS DS/SS DS/SS DS/SS

(SS=Single-Sided,DS=Double-Sided,"--"=NoMemory)

Due to CPU limitations, read the following guidelines before installing the memory in Dual Channel mode.

1. Dual Channel mode cannot be enabled if only one memory module is installed.

2. When enabling Dual Channel mode with two or four memory modules, it is recommended that memory

of the same capacity, brand, speed, and chips be used.

1-5 Installing an Expansion Card

Readthefollowingguidelinesbeforeyoubegintoinstallanexpansioncard:

•Make sure the motherboard supports the expansion card. Carefully read the manual that came

with your expansion card.

•Always turn off the computer and unplug the power cord from the power outlet before installing an

expansion card to prevent hardware damage.

1-6 Back Panel Connectors

USB 2.0/1.1 Port

TheUSBportsupportstheUSB2.0/1.1specication.UsethisportforUSBdevices.

PS/2 Keyboard/Mouse Port

Use this port to connect a PS/2 mouse or keyboard.

SMA Antenna Connectors (1T1R)j

Use this connector to connect an antenna.

After installing the HDMI device, make sure to set the default sound playback device to HDMI.

(The item name may differ depending on your operating system.)

USB 3.2 Gen 1 Port

TheUSB3.2Gen1port supportsthe USB3.2Gen1specicationand iscompatibletothe USB2.0

specication.UsethisportforUSBdevices.

HDMI Port

The HDMI port supports HDCP 2.3 and Dolby TrueHD and DTS HD Master Audio

formats.Italsosupportsupto192KHz/16bit7.1-channelLPCMaudiooutput.

You can use this port to connect your HDMI-supported monitor. The maximum supported resolution is

4096x2160@30Hz,buttheactualresolutionssupportedaredependentonthemonitorbeingused.

Tighten the antennas to the antenna connectors and then aim the antennas correctly for better

signal reception.

j Only for the Z490 UD AC.

- 10 -

Activity LED

Connection/

Speed LED

LANPort

Activity LED:Connection/Speed LED:

State Description

Orange 1 Gbps data rate

Green 100 Mbps data rate

Off 10 Mbps data rate

USB 3.2 Gen 2 Type-A Port (Red)

TheUSB3.2Gen2Type-AportsupportstheUSB3.2Gen2specicationandiscompatibletotheUSB

3.2Gen1andUSB2.0specication.UsethisportforUSBdevices.

RJ-45 LAN Port

TheGigabit EthernetLANportprovidesInternetconnectionatup to 1Gbps datarate.The following

describesthestatesoftheLANportLEDs.

PleasevisitGIGABYTE'swebsitefordetailsonconguringtheaudiosoftware.

•Whenremovingthecableconnectedtoabackpanelconnector,rstremovethecablefromyour

device and then remove it from the motherboard.

•When removing the cable, pull it straight out from the connector. Do not rock it side to side to

prevent an electrical short inside the cable connector.

AudioJackCongurations:

Jack Headphone/

2-channel 4-channel 5.1-channel 7.1-channel

LineIn/RearSpeakerOut aaa

Line Out/Front Speaker Out aaaa

Mic In/Center/Subwoofer Speaker Out a a

Front Panel Line Out/Side Speaker Out a

USB 3.2 Gen 1 Type-A Port (Q-Flash Plus Port)

TheUSBportsupports theUSB3.2Gen1specication.Usethis portfor USBdevices.Beforeusing

Q-Flash Plus (Note),makesuretoinserttheUSBashdriveintothisportrst.

Line In/Rear Speaker Out (Blue)

The line in jack. Use this audio jack for line in devices such as an optical drive, walkman, etc.

Line Out/Front Speaker Out (Green)

The line out jack.

Mic In/Center/Subwoofer Speaker Out (Pink)

The Mic in jack.

State Description

Blinking Data transmission or receiving is occurring

Off Nodatatransmissionorreceivingisoccurring

(Note) ToenabletheQ-FlashPlusfunctionpleasevisitthe"UniqueFeatures"webpageofGIGABYTE'swebsite.

- 11 -

1-7 Internal Connectors

Readthefollowingguidelinesbeforeconnectingexternaldevices:

•First make sure your devices are compliant with the connectors you wish to connect.

•Before installing the devices, be sure to turn off the devices and your computer. Unplug the power

cord from the power outlet to prevent damage to the devices.

•After installing the device and before turning on the computer, make sure the device cable has

been securely attached to the connector on the motherboard.

1) ATX_12V_2X2/ATX_12V_2X4

2) ATX

3) CPU_FAN

4) SYS_FAN1/2/3/4

5) D_LED1/D_LED2

6) LED_C1/LED_C2

7) SATA3 0/1/2/3/4/5

8) M2A_SB/M2M_SB

9) F_PANEL

10) F_AUDIO

11) SPDIF_O

12) F_U32

13) F_USB

14) THB_C1/THB_C2

15) COM

16) SPI_TPM

17) QFLASH_PLUS

18) CLR_CMOS

19) BAT

20) CPU/DRAM/VGA/BOOT

920

165

10 11

15 13 4

- 12 -

3/4) CPU_FAN/SYS_FAN1/2/3/4 (Fan Headers)

All fan headers on this motherboard are 4-pin. Most fan headers possess a foolproof insertion design.

When connecting a fan cable, be sure to connect it in the correct orientation (the black connector wire is

the ground wire). The speed control function requires the use of a fan with fan speed control design. For

optimum heat dissipation, it is recommended that a system fan be installed inside the chassis.

•Be sure to connect fan cables to the fan headers to prevent your CPU and system from

overheating. Overheating may result in damage to the CPU or the system may hang.

•Thesefanheadersarenotcongurationjumperblocks.Donotplaceajumpercapontheheaders.

SYS_FAN1

1 1

CPU_FAN/SYS_FAN2 SYS_FAN3/SYS_FAN4

PinNo. Denition

1GND

2 Voltage Speed Control

3 Sense

4 PWM Speed Control

5) D_LED1/D_LED2 (Digital LED Strip Headers)

The headers can be used to connect a standard 5050 addressable LED strip, with maximum power rating

of 5A (5V) and maximum number of 1000 LEDs.

PinNo. Denition

1 V (5V)

2 D

3NoPin

4 G

D_LED1 D_LED2

Connect your addressable LED strip to the header. The power pin

(marked with a triangle on the plug) of the LED strip must be connected

to Pin 1 of the addressable LED strip header. Incorrect connection may

lead to the damage of the LED strip.

6) LED_C1/LED_C2 (RGB LED Strip Headers)

 Theheaderscanbeusedtoconnectastandard5050RGBLEDstrip(12V/G/R/B),withmaximumpower

rating of 2A (12V) and maximum length of 2m.

PinNo. Denition

1 12V

2 G

4 B

Before installing the devices, be sure to turn off the devices and your computer. Unplug the power

cord from the power outlet to prevent damage to the devices.

ConnectyourRGBLEDstriptotheheader.Thepowerpin(marked

with a triangle on the plug) of the LED strip must be connected to Pin

1 (12V) of this header. Incorrect connection may lead to the damage

of the LED strip.

Forhowtoturnon/offthelightsoftheLEDstrippleasevisitthe"UniqueFeatures"webpageof

GIGABYTE's website.

LED_C2

LED_C1

RGBLEDStrip

12V

Addressable LED

Strip

- 14 -

7) SATA3 0/1/2/3/4/5 (SATA 6Gb/s Connectors)

The SATA connectors conform to SATA 6Gb/s standard and are compatible with SATA 3Gb/s and SATA

1.5Gb/s standard. Each SATA connector supports a single SATA device. The Intel®ChipsetsupportsRAID0,

RAID1,RAID5,andRAID10.RefertoChapter3,"ConguringaRAIDSet,"forinstructionsonconguring

aRAIDarray.

PinNo. Denition

1GND

2 TXP

3TXN

4GND

5RXN

6RXP

7GND

Toenablehot-pluggingfortheSATAports,refertoChapter2,"BIOSSetup,""Settings\IOPorts\

SATAAndRSTConguration,"formoreinformation.

SATA3 531

420

8) M2A_SB/M2M_SB (M.2 Socket 3 Connectors)

 TheM.2connectorssupportM.2SATASSDsorM.2PCIeSSDsandsupportRAIDconguration.Please

notethatanM.2PCIeSSDcannotbeusedtocreateaRAIDseteitherwithanM.2SATASSDoraSATA

harddrive.TocreateaRAIDarraywithanM.2PCIeSSD,youmustsetupthecongurationinUEFIBIOS

mode.RefertoChapter3,"ConguringaRAIDSet,"forinstructionsonconguringaRAIDarray.

SB_

80110 60

M2A_SB

_

B

BS_

B

80 60

M2M_SB

Follow the steps below to correctly install an M.2 SSD in the M.2 connector.

Step 1:

Use a screw driver to unfasten the screw and standoff from the motherboard. Locate the proper mounting

holefortheM.2SSDtobeinstalledandthenscrewthestandoffrst.

Step 2:

Slide the M.2 SSD into the connector at an angle.

Step 3:

Press the M.2 SSD down and then secure it with the screw.

- 15 -

•M2A_SB:

SATA3 0 SATA3 1 SATA3 2 SATA3 3 SATA3 4 SATA3 5

M.2 SATA SSD araaaa

M.2 PCIe SSD

aaaaaa

NoM.2SSDInstalled aaaaaa

a r: Available, :Notavailable

Connector

Type of

M.2 SSD

Installation Notices for the M.2 and SATA Connectors:

The availability of the SATA connectors may be affected by the type of device installed in the M.2 sockets. The

M2A_SBconnectorsharesbandwidthwiththeSATA31connector.Refertothefollowingtablesfordetails.

•M2M_SB:

SATA3 0 SATA3 1 SATA3 2 SATA3 3 SATA3 4 SATA3 5

M.2 PCIe SSD *

aaaaaa

NoM.2SSDInstalled aaaaaa

a r: Available, :Notavailable

* The M2M_SB connector supports only PCIe SSDs.

Connector

Type of

M.2 SSD

- 16 -

The front panel design may differ by chassis. A front panel module mainly consists of power switch, reset

switch, power LED, hard drive activity LED, speaker and etc. When connecting your chassis front panel

module to this header, make sure the wire assignments and the pin assignments are matched correctly.

9) F_PANEL (Front Panel Header)

Connect the power switch, reset switch, speaker, chassis intrusion switch/sensor and system status indicator

onthechassistothisheaderaccordingtothepinassignmentsbelow.Notethepositiveandnegativepins

before connecting the cables.

System Status LED

S0 On

S3/S4/S5 Off

•PW(PowerSwitch,Red):

Connects to the power switch on the chassis front panel. You may

congure the way to turn off your system using the power switch

(refertoChapter2,"BIOSSetup,""Settings\PlatformPower,"formore

information).

•SPEAK (Speaker, Orange):

Connects to the speaker on the chassis front panel. The system reports

system startup status by issuing a beep code. One single short beep

•PLED/PWR_LED (Power LED, Yellow/Purple):

Connects to the power status indicator

on the chassis front panel. The LED is on

when the system is operating. The LED is

off when the system is in S3/S4 sleep state

or powered off (S5).

will be heard if no problem is detected at system startup.

•HD (Hard Drive Activity LED, Blue):

Connects to the hard drive activity LED on the chassis front panel. The LED is on when the hard drive

is reading or writing data.

•RES (ResetSwitch,Green):

Connects to the reset switch on the chassis front panel. Press the reset switch to restart the computer

ifthecomputerfreezesandfailstoperformanormalrestart.

•CI (Chassis Intrusion Header, Gray):

Connects to the chassis intrusion switch/sensor on the chassis that can detect if the chassis cover has

been removed. This function requires a chassis with a chassis intrusion switch/sensor.

•NC (Orange):NoConnection.

Power LED

CI-

CI+

PWR_LED-

PWR_LED+

PLED-

PW-

SPEAK+

SPEAK-

PLED+

PW+

Power LED

HD-

RES+

HD+

RES-

Hard Drive

Activity LED

Reset

Switch Chassis Intrusion

Header

Power Switch Speaker

PWR_LED-

10) F_AUDIO (Front Panel Audio Header)

 ThefrontpanelaudioheadersupportsHighDenitionaudio(HD).Youmayconnectyourchassisfront

panel audio module to this header. Make sure the wire assignments of the module connector match the

pin assignments of the motherboard header. Incorrect connection between the module connector and the

motherboard header will make the device unable to work or even damage it.

Some chassis provide a front panel audio module that has separated connectors on each wire instead

of a single plug. For information about connecting the front panel audio module that has different wire

assignments, please contact the chassis manufacturer.

9 1

10 2

PinNo. Denition PinNo. Denition

1 MIC2_L 6 Sense

2 7GND FAUDIO_JD

3 8MIC2_R NoPin

4 9NC LINE2_L

5 10 SenseLINE2_R

- 17 -

11) SPDIF_O (S/PDIF Out Header)

This header supports digital S/PDIF Out and connects a S/PDIF digital audio cable (provided by expansion

cards) for digital audio output from your motherboard to certain expansion cards like graphics cards and

sound cards. For example, some graphics cards may require you to use a S/PDIF digital audio cable for

digital audio output from your motherboard to your graphics card if you wish to connect an HDMI display

to the graphics card and have digital audio output from the HDMI display at the same time. For information

about connecting the S/PDIF digital audio cable, carefully read the manual for your expansion card.

PinNo. Denition

1 5VDUAL

2NoPin

3 SPDIFO

4GND

PinNo. Denition PinNo. Denition PinNo. Denition

1 VBUS 8 D1- 15 SSTX2-

2 9 D1+ 16SSRX1- GND

3 10 17SSRX1+ NC SSRX2+

4 D2+ 18GND 11 SSRX2-

5 SSTX1- 12 D2- 19 VBUS

6 SSTX1+ 13 20GND NoPin

7 14 SSTX2+GND

12) F_U32 (USB 3.2 Gen 1 Header)

 TheheaderconformstoUSB3.2Gen1andUSB2.0specicationandcanprovidetwoUSBports.For

purchasingtheoptional3.5"frontpanelthatprovidestwoUSB3.2Gen1ports,pleasecontactthelocal

dealer.

20 1

13) F_USB (USB 2.0/1.1 Header)

 TheheaderconformstoUSB2.0/1.1specication.EachUSBheadercanprovidetwoUSBportsviaan

optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer.

PinNo. Denition PinNo. Denition

1 Power (5V) 6 USB DY+

2 Power (5V) 7 GND

3 USB DX- 8 GND

4 USB DY- 9 NoPin

5 USB DX+ 10 NC

•Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB 2.0/1.1 header.

•Prior to installing the USB bracket, be sure to turn off your computer and unplug the power cord

from the power outlet to prevent damage to the USB bracket.

- 18 -

14) THB_C1/THB_C2 (Thunderbolt™ Add-in Card Connectors)

The connectors are used to connect to a GIGABYTE Thunderbolt™ add-in card

Supports a Thunderbolt™ add-in card.

15) COM (Serial Port Header)

The COM header can provide one serial port via an optional COM port cable. For purchasing the optional

COM port cable, please contact the local dealer.

PinNo. Denition PinNo. Denition

1 6NDCD- NDSR-

2 7NSIN NRTS-

3 8NSOUT NCTS-

4 9NDTR- NRI-

5 10GND NoPin

16) SPI_TPM (Trusted Platform Module Header)

You may connect an SPI TPM (Trusted Platform Module) to this header.

PinNo. Denition PinNo. Denition

1Data Output 7Chip Select

2Power (3.3V) 8GND

3NoPin 9IRQ

4NC 10 NC

5Data Input 11 NC

6CLK 12 RST

17) QFLASH_PLUS (Q-Flash Plus Button)

Q-Flash Plus allows you to update the BIOS when your system is off (S5 shutdown state). Save the latest

BIOSonaUSBthumbdriveandplugitintothededicatedport,andthenyoucannowashtheBIOS

automaticallybysimplypressingtheQ-FlashPlusbutton.TheQFLEDwillashwhentheBIOSmatching

andashingactivitiesstartandwillstopashingwhenthemainBIOSashingiscomplete.

ForhowtouseQ-FlashPluspleasevisitthe"UniqueFeatures"webpageofGIGABYTE'swebsite.

QFLASH_PLUS

QFLED

S 



SF

B_

1THB_C2

THB_C1

- 19 -

19) BAT (Battery)

 Thebatteryprovidespowertokeepthevalues(suchasBIOScongurations,date,andtimeinformation)

intheCMOSwhenthecomputeristurnedoff.Replacethebatterywhenthebatteryvoltagedropstoalow

level, or the CMOS values may not be accurate or may be lost.

You may clear the CMOS values by removing the battery:

1. Turn off your computer and unplug the power cord.

2. Gently remove the battery from the battery holder and wait for one minute. (Or use a metal

object like a screwdriver to touch the positive and negative terminals of the battery holder,

making them short for 5 seconds.)

3. Replacethebattery.

4. Plug in the power cord and restart your computer.

•Always turn off your computer and unplug the power cord before replacing the battery.

•Replacethebatterywithanequivalentone.Damagetoyourdevicesmayoccurifthebatteryis

replaced with an incorrect model.

•Contact the place of purchase or local dealer if you are not able to replace the battery by yourself

or uncertain about the battery model.

•When installing the battery, note the orientation of the positive side (+) and the negative side (-)

of the battery (the positive side should face up).

•Used batteries must be handled in accordance with local environmental regulations.

20) CPU/DRAM/VGA/BOOT (Status LEDs)

The status LEDs show whether the CPU, memory, graphics card, and operating system are working

properlyaftersystempower-on.IftheCPU/DRAM/VGALEDison,thatmeansthecorrespondingdevice

is not working normally; if the BOOT LED is on, that means you haven't entered the operating system yet.

CPU: CPU status LED

DRAM: Memory status LED

VGA: Graphics card status LED

BOOT: Operating system status LED



S_

18) CLR_CMOS (Clear CMOS Jumper)

 UsethisjumpertocleartheBIOScongurationandresettheCMOSvaluestofactorydefaults.Toclear

the CMOS values, use a metal object like a screwdriver to touch the two pins for a few seconds.

•Always turn off your computer and unplug the power cord from the power outlet before clearing

the CMOS values.

•Aftersystemrestart,gotoBIOSSetuptoloadfactorydefaults(selectLoadOptimizedDefaults)or

manuallyconguretheBIOSsettings(refertoChapter2,"BIOSSetup,"forBIOScongurations).

Open:Normal

Short: Clear CMOS Values

- 20 -

CPU DRAM

VGA BOOT

BIOS (Basic Input and Output System) records hardware parameters of the system in the CMOS on the

motherboard. Its major functions include conducting the Power-On Self-Test (POST) during system startup,

saving system parameters and loading operating system, etc. BIOS includes a BIOS Setup program that allows

theusertomodifybasicsystemcongurationsettingsortoactivatecertainsystemfeatures.

When the power is turned off, the battery on the motherboard supplies the necessary power to the CMOS to

keepthecongurationvaluesintheCMOS.

To access the BIOS Setup program, press the <Delete> key during the POST when the power is turned on.

To upgrade the BIOS, use either the GIGABYTE Q-Flash or @BIOS utility.

•Q-Flash allows the user to quickly and easily upgrade or back up BIOS without entering the operating system.

•@BIOS is a Windows-based utility that searches and downloads the latest version of BIOS from the Internet

and updates the BIOS.

Chapter 2 BIOS Setup

•BecauseBIOSashingispotentiallyrisky,ifyoudonotencounterproblemsusingthecurrentversionofBIOS,

itisrecommendedthatyounotashtheBIOS.ToashtheBIOS,doitwithcaution.InadequateBIOSashing

may result in system malfunction.

•It is recommended that you not alter the default settings (unless you need to) to prevent system instability or other

unexpected results. Inadequately altering the settings may result in system's failure to boot. If this occurs, try to

cleartheCMOSvaluesandresettheboardtodefaultvalues.(Refertothe"LoadOptimizedDefaults"sectionin

this chapter or introductions of the battery/clear CMOS jumper in Chapter 1 for how to clear the CMOS values.)

2-1 Startup Screen

The following startup Logo screen will appear when the computer boots.

•When the system is not stable as usual, select the item to set your system to its defaults.Load Optimized Defaults

•The BIOS Setup menus described in this chapter are for reference only and may differ by BIOS version.

Function Keys

There are two different BIOS modes as follows and you can use the <F2> key to switch between the two modes.

Easy Mode allows users to quickly view their current system information or to make adjustments for optimum

performance.InEasyMode,youcanuseyourmousetomovethroughcongurationitems.TheAdvancedMode

provides detailed BIOS settings. You can press the arrow keys on your keyboard to move among the items

and press <Enter> to accept or enter a sub-menu. Or you can use your mouse to select the item you want.

- 21 -

2-2 The Main Menu

Hardware

Information

Option Description Current Settings

Setup Menus

Conguration

Items

System

Time

Quick Access Bar allows you to quickly move to

the General Help, Easy Mode, Smart Fan 5, or

Q-Flash screen.

Advanced Mode Function Keys

<f><g> Move the selection bar to select a setup menu

<h><i>Movetheselectionbartoselectancongurationitemonamenu

<Enter>/Double Click Execute command or enter a menu

<+ >/<Page Up> Increase the numeric value or make changes

<->/<Page Down> Decrease the numeric value or make changes

<F1> Show descriptions of the function keys

<F2> Switch to Easy Mode

<F3> SavethecurrentBIOSsettingstoaprole

<F4> LoadtheBIOSsettingsfromaprolecreatedbefore

<F5> RestorethepreviousBIOSsettingsforthecurrentsubmenus

<F6> Display the Smart Fan 5 screen

<F7> LoadtheOptimizedBIOSdefaultsettingsforthecurrentsubmenus

<F8> Access the Q-Flash utility

<F10> Save all the changes and exit the BIOS Setup program

<F11> Switch to the Favorites submenu

<F12> Capture the current screen as an image and save it to your USB drive

<Insert> Add or remove a favorite option

<Ctrl>+<S> Display information on the installed memory

<Esc> Main Menu: Exit the BIOS Setup program

Submenus: Exit current submenu

- 22 -

2-3 Favorites (F11)

Set your frequently used options as your favorites and use the <F11> key to quickly switch to the page where

all of your favorite options are located. To add or remove a favorite option, go to its original page and press

<Insert>ontheoption.Theoptionismarkedwithastarsignifsetasa"favorite."

- 23 -

&FCLK Frequency for Early Power On

 AllowsyoutosettheFCLKfrequency.Optionsare:Normal(800Mhz),1GHz,400MHz.(Default:1GHz)

&Hyper-Threading Technology

Allows you to determine whether to enable multi-threading technology when using an Intel® CPU that

supports this function. This feature only works for operating systems that support multi-processor mode.

AutoletstheBIOSautomaticallycongurethissetting.(Default:Auto)

&No. of CPU Cores Enabled

Allows you to select the number of CPU cores to enable in an Intel® multi-core CPU (the number of CPU

coresmayvarybyCPU).AutoletstheBIOSautomaticallycongurethissetting.(Default:Auto)

dPer Core HT Disable Setting

&HT Disable (Note)

 AllowsyoudeterminewhethertodisabletheHTfeatureforeachCPUcore.Thisitemiscongurableonly

when Per Core HT Disable Setting is set to Manual. (Default: Disabled)

&VT-d

Enables or disables Intel®VirtualizationTechnologyforDirectedI/O.(Default:Enabled)

&Intel(R) Speed Shift Technology (Intel® Speed Shift Technology) (Note)

Enables or disables Intel® Speed Shift Technology. Enabling this feature allows the processor to ramp up

its operating frequency more quickly and then improves the system responsiveness. (Default: Enabled)

&CPU Thermal Monitor (Note)

Enables or disables Intel® Thermal Monitor function, a CPU overheating protection function. When enabled,

the CPU core frequency and voltage will be reduced when the CPU is overheated. lets the BIOS Auto

automaticallycongurethissetting.(Default:Auto)

&Ring to Core offset (Down Bin)

 AllowsyoutodeterminewhethertodisabletheCPURingratioauto-downfunction.Auto lets the BIOS

automaticallycongurethissetting.(Default:Auto)

&CPU EIST Function (Note)

Enables or disables Enhanced Intel® Speed Step Technology (EIST). Depending on CPU loading, Intel®

EIST technology can dynamically and effectively lower the CPU voltage and core frequency to decrease

average power consumption and heat production. AutoletstheBIOSautomaticallycongurethissetting.

(Default: Auto)

&Race To Halt (RTH) (Note)/EnergyEfcientTurbo (Note)

Enables or disables the CPU power saving related settings.

&Voltage Optimization

 Allowsyoutodeterminewhethertoenablevoltageoptimizationtoreducepowerconsumption.(Default:

Auto)

&Intel(R) Turbo Boost Technology (Note)

Allows you to determine whether to enable the Intel® CPU Turbo Boost technology. lets the BIOS Auto

automaticallycongurethissetting.(Default:Auto)

&CPU Flex Ratio Override

 EnablesordisablestheCPUFlexRatio.ThemaximumCPUclockratiowillbebasedontheCPU Flex

Ratio Settings CPU Clock Ratio Auto value if is set to . (Default: Disabled)

&CPU Flex Ratio Settings

 AllowsyoutosettheCPUFlexRatio.TheadjustablerangemayvarybyCPU.

(Note) ThisitemispresentonlywhenyouinstallaCPUthatsupportsthisfeature.Formoreinformationabout

Intel® CPUs' unique features, please visit Intel's website.

- 25 -

&Frequency Clipping TVB (Note)

Allows you to enable or disable automatic CPU frequency reduction initiated by Thermal Velocity Boost.

AutoletstheBIOSautomaticallycongurethissetting.(Default:Auto)

&Voltage reduction initiated TVB (Note)

Allows you to enable or disable automatic CPU voltage reduction initiated by Thermal Velocity Boost. Auto

letstheBIOSautomaticallycongurethissetting.(Default:Auto)

dActive Turbo Ratios

&Turbo Ratio (1-Core Active~10-Core Active)

Allows you to set the CPU Turbo ratios for different number of active cores. sets the CPU Turbo Auto

ratiosaccordingtotheCPUspecications.

Thisitemiscongurableonlywhen

Active Turbo Ratios is set

Enabled

(Default: Auto)

dC-States Control

&CPU Enhanced Halt (C1E)

Enables or disables Intel

CPU Enhanced Halt (C1E) function, a CPU power-saving function in system halt state.

When enabled, the CPU core frequency and voltage will be reduced during system halt state to decrease

power consumption. AutoletstheBIOSautomaticallycongurethissetting.Thisitemiscongurableonly

when is set to C-States Control Enabled. (Default: Auto)

&C3 State Support (Note)

Allows you to determine whether to let the CPU enter C3 mode in system halt state. When enabled, the

CPU core frequency and voltage will be reduced during system halt state to decrease power consumption.

The C3 state is a more enhanced power-saving state than C1. AutoletstheBIOSautomaticallycongure

thissetting.ThisitemiscongurableonlywhenC-States Control Enabled is set to . (Default: Auto)

&C6/C7 State Support (Note)

Allows you to determine whether to let the CPU enter C6/C7 mode in system halt state. When enabled, the

CPU core frequency and voltage will be reduced during system halt state to decrease power consumption.

The C6/C7 state is a more enhanced power-saving state than C3. AutoletstheBIOSautomaticallycongure

thissetting.ThisitemiscongurableonlywhenC-States Control Enabled is set to . (Default: Auto)

&C8 State Support (Note)

Allows you to determine whether to let the CPU enter C8 mode in system halt state. When enabled, the CPU

core frequency and voltage will be reduced during system halt state to decrease power consumption. The

C8 state is a more enhanced power-saving state than C6/C7. AutoletstheBIOSautomaticallycongure

thissetting.ThisitemiscongurableonlywhenC-States Control Enabled is set to . (Default: Auto)

&C10 State Support (Note)

Allows you to determine whether to let the CPU enter C10 mode in system halt state. When enabled, the

CPU core frequency and voltage will be reduced during system halt state to decrease power consumption.

The C10 state is a more enhanced power-saving state than C8. AutoletstheBIOSautomaticallycongure

thissetting.ThisitemiscongurableonlywhenC-States Control Enabled is set to . (Default: Auto)

&Package C State Limit (Note)

Allows you to specify the C-state limit for the processor. AutoletstheBIOSautomaticallycongurethis

setting.ThisitemiscongurableonlywhenC-States Control Enabled is set to . (Default: Auto)

(Note) ThisitemispresentonlywhenyouinstallaCPUthatsupportsthisfeature.Formoreinformationabout

Intel® CPUs' unique features, please visit Intel's website.

- 26 -

&Rank Interleaving

Enables or disables memory rank interleaving. allows the system to simultaneously access different Enabled

ranks of the memory to increase memory performance and stability. lets the BIOS automatically Auto

congurethissetting.(Default:Auto)

&Memory Boot Mode

Provides memory detection and training methods.

Auto    LetstheBIOSautomaticallycongurethissetting.(Default)

Normal   TheBIOSautomaticallyperformsmemorytraining.Pleasenotethatifthesystem

becomes unstable or unbootable, try to clear the CMOS values and reset the board

todefaultvalues.(Refertotheintroductionsofthebattery/clearCMOSjumperin

Chapter 1 for how to clear the CMOS values.)

Fast    Skipmemorydetectionand traininginsomespeciccriteriaforfastermemory

boot.

Disable Fast Boot Detect and train memory at every single boot.

&Realtime Memory Timing

 Allowsyoutone-tunememorytimingsaftertheBIOSstage.(Default:Auto)

&Memory Enhancement Settings

 Providesseveralmemoryperformanceenhancementsettings:Auto,RelaxOC,EnhancedStability,Normal,

EnhancedPerformance,HighFrequency,HighDensity,andDDR-4500+.(Default:Auto)

&Memory Channel Detection Message

Allows you to determine whether to show an alert message when the memory is not installed in the optimal

memory channel. (Default: Enabled)

 SPD Info

Displays information on the installed memory.

 Memory Channels Timing

d Channels Standard Timing Control, Channels Advanced Timing Control, Channel Misc

Timing Control

 Thesesectionsprovidememorytimingsettings.Note:Yoursystemmaybecomeunstableorfailtoboot

after you make changes on the memory timings. If this occurs, please reset the board to default values by

loadingoptimizeddefaultsorclearingtheCMOSvalues.

& Vcore Voltage Mode/SVID offset/BCLK Adaptive Voltage/CPU Graphics Voltage

(VAXG)/DRAM Voltage (CH A/B)/CPU VCCIO/CPU VCCIO2/CPU System Agent Voltage/

VCC Substained/VCCPLL/VCCPLL OC/VCCVTT/PCH Core

These items allow you to adjust the CPU Vcore and memory voltages.

 Advanced Voltage Settings

 ThissubmenuallowsyoutocongureLoad-LineCalibrationlevel,over-voltageprotectionlevel,andover-

current protection level.

- 28 -

2-5 Settings

 Platform Power

&Platform Power Management

Enables or disables the Active State Power Management function (ASPM). (Default: Disabled)

&Power On By Keyboard

Allows the system to be turned on by a PS/2 keyboard wake-up event.

 Note:Tousethisfunction,youneedanATXpowersupplyprovidingatleast1Aonthe+5VSBlead.

Disabled Disables this function. (Default)

Password Set a password with 1~5 characters to turn on the system.

Keyboard98 PressPOWERbuttonontheWindows98keyboardtoturnonthesystem.

Any Key Press any key to turn on the system.

&Power On Password

Set the password when is set to .Power On By Keyboard Password

Press <Enter> on this item and set a password with up to 5 characters and then press <Enter> to accept.

To turn on the system, enter the password and press <Enter>.

 Note:Tocancelthepassword,press<Enter>onthisitem.Whenpromptedforthepassword,press<Enter>

again without entering the password to clear the password settings.

&Power On By Mouse

Allows the system to be turned on by a PS/2 mouse wake-up event.

 Note:Tousethisfunction,youneedanATXpowersupplyprovidingatleast1Aonthe+5VSBlead.

Disabled Disables this function. (Default)

Move Move the mouse to turn on the system.

Double Click Double click on left button on the mouse to turn on the system.

&ErP

Determines whether to let the system consume least power in S5 (shutdown) state. (Default: Disabled)

 Note:WhenthisitemissettoEnabled,thefollowingfunctionswillbecomeunavailable:ResumebyAlarm,

power on by mouse, and power on by keyboard.

&Soft-Off by PWR-BTTN

 ConguresthewaytoturnoffthecomputerinMS-DOSmodeusingthepowerbutton.

Instant-Off Press the power button and then the system will be turned off instantly. (Default)

Delay 4 Sec. Press and hold the power button for 4 seconds to turn off the system. If the power

button is pressed for less than 4 seconds, the system will enter suspend mode.

- 29 -

&Resume by Alarm

Determines whether to power on the system at a desired time. (Default: Disabled)

If enabled, set the date and time as following:

Wakeupday:Turnonthesystemataspecictimeoneachdayoronaspecicdayinamonth.

Wake up hour/minute/second: Set the time at which the system will be powered on automatically.

 Note:Whenusingthisfunction,avoidinadequateshutdownfromtheoperatingsystemorremovalofthe

AC power, or the settings may not be effective.

&Power Loading

Enables or disables dummy load. When the power supply is at low load, a self-protection will activate causing

it to shutdown or fail. If this occurs, please set to Enabled Auto. letstheBIOSautomaticallycongurethis

setting. (Default: Auto)

&RC6(Render Standby)

Allows you to determine whether to let the onboard graphics enter standby mode to decrease power

consumption. (Default: Enabled)

&AC BACK

Determines the state of the system after the return of power from an AC power loss.

Memory The system returns to its last known awake state upon the return of the AC power.

Always On The system is turned on upon the return of the AC power.

Always Off The system stays off upon the return of the AC power. (Default)

 IO Ports

&Initial Display Output

 SpeciestherstinitiationofthemonitordisplayfromtheinstalledPCIExpressgraphicscardortheonboard

graphics.

IGD Video(Note) Setstheonboardgraphicsastherstdisplay.

PCIe1Slot SetsthegraphicscardonthePCIEX16slotastherstdisplay.(Default)

PCIe2Slot SetsthegraphicscardonthePCIEX4slotastherstdisplay.

&Internal Graphics

Enables or disables the onboard graphics function. (Default: Auto)

&DVMT Pre-Allocated

 Allowsyoutosettheonboardgraphicsmemorysize.Optionsare:32M~512M.(Default:64M)

&DVMT Total Gfx Mem

 AllowsyoutoallocatetheDVMTmemorysizeoftheonboardgraphics.Optionsare:128M,256M,MAX.

(Default: 256M)

&Aperture Size

Allows you to set the maximum amount of system memory that can be allocated to the graphics card.

Options are: 128MB, 256MB, 512MB, 1024MB, and 2048MB. (Default: 256MB)

&PCIE Bifurcation Support

Allows you to determine how the bandwidth of the PCIEX16 slot is divided. Options: PCIE x16, PCIE x8/

x8, PCIE x8/x4/x4. (Default: Auto)

&OnBoard LAN Controller

 EnablesordisablestheonboardLANfunction.(Default:Enabled)

 Ifyouwishtoinstalla3rdpartyadd-innetworkcardinsteadofusingtheonboardLAN,setthisitemto

Disabled.

(Note) ThisitemispresentonlywhenyouinstallaCPUthatsupportsthisfeature.

- 30 -

Produktspecifikationer

Varumärke:	Gigabyte
Kategori:	moderkort
Modell:	Z490 UD

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