Gigabyte B450M DS3H User manual

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B450M DS3H
User's Manual
Rev. 1101

Copyright
©2021 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
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
B450M DS3H 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 ..................................................................................................19
2-1 Startup Screen ............................................................................................... 19
2-2 The Main Menu .............................................................................................. 20
2-3 M.I.T. .............................................................................................................. 21
2-4 System ........................................................................................................... 25
2-5 BIOS............................................................................................................... 26
2-6 Peripherals..................................................................................................... 29
2-7 Chipset........................................................................................................... 31
2-8 Power............................................................................................................. 33
2-9 Save & Exit..................................................................................................... 35
Chapter 3 Appendix ......................................................................................................36
3-1 ConguringaRAIDSet.................................................................................. 36
3-2 Drivers Installation.......................................................................................... 38
RegulatoryNotices.................................................................................................... 39
Contact Us ................................................................................................................ 42

- 4 -
B450M DS3H 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
5B450M DS3H Motherboard 5Two SATA cables
5Motherboard driver disk 5I/O Shield
5User's Manual
KB_MS_USB CPU_FAN
SYS_FAN1
ATX
B450M DS3H
AUDIO
DDR4_4
DDR4_1
BAT
ATX_12V
AMD
B450
R_USB30_1
HDMI
CODEC
M_BIOS
DVI
PCIEX16
PCIEX1
iTE®
Super I/O
Realtek®
GbELAN
F_USB30
F_USB1 F_PANEL
F_USB2
LED_CPU
SATA3
012
USB_LAN
Socket AM4
R_USB30_2
3
CLR_CMOS
M2A_SOCKET
80 60 42110
SATA3
DDR4_2
DDR4_3
COM
TPM
SPDIF_O
F_AUDIO
PCIEX4

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 -

1-2 ProductSpecications
CPU AM4 Socket:
- AMDRyzen™2nd Generation processors
- AMDRyzen™withRadeon™Vega Graphics processors
- AMDRyzen™1st Generation processors
(Go to GIGABYTE's website for the latest CPU support list.)
Chipset AMD B450
Memory 4xDDR4DIMMsocketssupportingupto128GB (32 GB single DIMM capacity)
of system memory
Dual channel memory architecture
SupportforDDR42933/2667/2400/2133MHzmemorymodules
Supportfor ECCUn-bufferedDIMM 1Rx8/2Rx8memory modules(operate in
non-ECC mode)
Supportfornon-ECCUn-bufferedDIMM1Rx8/2Rx8/1Rx16memorymodules
SupportforExtremeMemoryProle(XMP)memorymodules
(Go to GIGABYTE's website for the latest supported memory speeds and memory
modules.)
Onboard
Graphics
Integrated Graphics Processor:
 - 1xDVI-Dport,supportingamaximumresolutionof1920x1200@60Hz
* The DVI-D port does not support D-Sub connection by adapter.
- 1xHDMIport,supportingamaximumresolutionof4096x2160@60Hz(Note)
* Support for HDMI 2.0 version and HDCP 2.2.(Note)
Maximum shared memory of 16 GB
Audio Realtek®Audio CODEC
HighDenitionAudio
2/4/5.1/7.1-channel
* Tocongure7.1-channelaudio,youhavetouseanHDfrontpanelaudiomodule
and enable the multi-channel audio feature through the audio driver.
Support for S/PDIF Out
LAN Realtek®GbELANchip(10/100/1000Mbit)
Expansion Slots 1 x PCI Express x16 slot, running at x16 (PCIEX16) (Note)
* For optimum performance, if only one PCI Express graphics card is to be installed,
be sure to install it in the PCIEX16 slot.
(The PCIEX16 slot conforms to PCI Express 3.0 standard.)
1 x PCI Express x16 slot, running at x4 (PCIEX4)
1 x PCI Express x1 slot
(The PCIEX4 and PCI Express x1 slots conform to PCI Express 2.0 standard.)
Multi-Graphics
Technology Support for AMD Quad-GPU CrossFire™and 2-WayAMD CrossFire™technologies
Storage Interface 1 x M.2 connector (Socket 3, M key, type 2242/2260/2280/22110 SATA and
PCIe 3.0 x4/x2 SSD support)
4 x SATA 6Gb/s connectors
SupportforRAID0,RAID1,andRAID10
* Referto"1-7InternalConnectors,"fortheinstallationnoticesfortheM.2andSATA
connectors.
(Note) ActualsupportmayvarybyCPU.
- 6 -

USB Chipset:
- 2 x USB 3.1 Gen 1 ports available through the internal USB header
- 8 x USB 2.0/1.1 ports (4 ports on the back panel, 4 ports available through
the internal USB headers)
CPU:
- 4 x USB 3.1 Gen 1 ports on the back panel
Internal
Connectors
1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector
1 x CPU fan header
1 x system fan header
1 x M.2 Socket 3 connector
4 x SATA 6Gb/s connectors
1 x front panel header
1 x front panel audio header
1 x S/PDIF Out header
1xCPUcoolerLEDstrip/RGBLEDstripheader
1 x USB 3.1 Gen 1 header
2 x USB 2.0/1.1 headers
1 x Trusted Platform Module (TPM) header (2x10 pin, for the GC-TPM2.0 module
only)
1 x serial port header
1 x Clear CMOS jumper
Back Panel
Connectors
1 x PS/2 keyboard/mouse port
1 x DVI-D port
1 x HDMI port
4 x USB 3.1 Gen 1 ports
4 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.
BIOS 1x128Mbitash
Use of licensed AMI UEFI BIOS
PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0
- 7 -

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.
- 3D OSD
- @BIOS
- AutoGreen
- Cloud Station
- EasyTune
- Fast Boot
- Game Boost
- ON/OFFCharge
- RGBFusion
- Smart Backup
- Smart Keyboard
- Smart TimeLock
- Smart HUD
- Smart Survey
- System Information Viewer
- USB Blocker
- V-Tuner
Support for Q-Flash
Support for Xpress Install
Bundled
Software
Norton®Internet Security (OEM version)
cFosSpeed
Operating
System Support for Windows 10 64-bit
Form Factor Micro ATX Form Factor; 24.4cm x 21.5cm
* 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.
Please visit the Support\Utility List
page on GIGABYTE's website to
download the latest version of apps.
- 8 -

1-3 Installing the CPU
Please visit GIGABYTE's website for details on hardware installation.
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. Amemory module can be installed in only one direction.
If you are unable to insert the memory, switch the direction.
Installing the CPU
Locate the pin one (denoted by a small triangle) of the CPU socket and the CPU.
AM4 Socket
A Small Triangle Marking
Denotes Pin One of the
Socket AM4 CPU
A Small Triangle Marking
Denotes CPU Pin One
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.
•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.
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.
The four memory sockets are divided into two channels and each channel has two memory sockets as following:
ChannelA:DDR4_2,DDR4_4
ChannelB:DDR4_1,DDR4_3
- 9 -

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.
DVI-D Port (Note 1)
TheDVI-DportconformstotheDVI-Dspecicationandsupportsamaximumresolutionof1920x1200@60Hz
(the actual resolutions supported depend on the monitor being used). Connect a monitor that supports
DVI-D connection to this port.
HDMI Port
The HDMI port supports HDCP 2.2 (Note2) and Dolby TrueHD and DTS HD
MasterAudio formats.It alsosupports upto 192KHz/24bit8-channel LPCM
audio output. You can use this port to connect your HDMI-supported monitor. The maximum supported
resolutionis4096x2160@60Hz(Note2), but the actual resolutions supported are dependent on the
monitor being used.
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.)
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. For optimum performance, when enabling
DualChannelmodewithtwomemorymodules,werecommendthatyouinstallthemintheDDR4_1
andDDR4_2sockets.
DualChannelMemoryCongurationsTable
DDR4_4 DDR4_2 DDR4_3 DDR4_1
2 Modules - - DS/SS - - DS/SS
DS/SS - - DS/SS - -
4 Modules DS/SS DS/SS DS/SS DS/SS
(SS=Single-Sided,DS=Double-Sided,"--"=NoMemory)
(Note1) TheDVI-DportdoesnotsupportD-Subconnectionbyadapter.
(Note2) ActualsupportmayvarybyCPU.
- 10 -

Tocongure7.1-channelaudio,youhavetouseanHDfrontpanelaudiomoduleandenablethe
multi-channel audio feature through the audio driver.
•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.
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.
AudioJackCongurations:
Jack Headphone/
2-channel 4-channel 6-channel 8-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
PleasevisitGIGABYTE'swebsitefordetailsonconguringtheaudiosoftware.
USB 3.1 Gen 1 Port
TheUSB3.1Gen1portsupportstheUSB3.1Gen1specicationandiscompatibletothe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.
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
State Description
Blinking Data transmission or receiving is occurring
Off Nodatatransmissionorreceivingisoccurring
- 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
2) ATX
3) CPU_FAN
4) SYS_FAN1
5) LED_CPU
6) SATA3 0/1/2/3
7) M2A_SOCKET
8) SPDIF_O
9) F_PANEL
10) F_ AUDIO
11) F_USB30
12) F_USB1/F_USB2
13) COM
14) TPM
15) BAT
16) CLR_CMOS
1
2
3
11
5
13
10 14
7
4
6
12 916
15
8
- 12 -

DEBUG
PORT
G.QBOFM
131
2412
ATX
1/2) ATX_12V/ATX (2x4 12V Power Connector and 2x12 Main Power Connector)
With the use of the power connector, the power supply can supply enough stable power to all the components
onthemotherboard.Beforeconnectingthepowerconnector,rstmakesurethepowersupplyisturned
off and all devices are properly installed. The power connector possesses a foolproof design. Connect the
power supply cable to the power connector in the correct orientation.
The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected,
the computer will not start.
To meet expansion requirements, it is recommended that a power supply that can withstand high
power consumption be used (500W or greater). If a power supply is used that does not provide the
required power, the result can lead to an unstable or unbootable system.
ATX:
PinNo. Denition PinNo. Denition
1 3.3V 13 3.3V
2 3.3V 14 -12V
3GND 15 GND
4 +5V 16 PS_ON(softOn/Off)
5GND 17 GND
6 +5V 18 GND
7GND 19 GND
8 Power Good 20 NC
9 5VSB (stand by +5V) 21 +5V
10 +12V 22 +5V
11 +12V (Only for 2x12-pin
ATX)
23 +5V (Only for 2x12-pin ATX)
12 3.3V (Only for 2x12-pin
ATX)
24 GND(Onlyfor2x12-pinATX)
ATX_12V:
PinNo. Denition PinNo. Denition
1GND(Onlyfor2x4-pin12V) 5 +12V (Only for 2x4-pin 12V)
2GND(Onlyfor2x4-pin12V) 6 +12V (Only for 2x4-pin 12V)
3GND 7 +12V
4GND 8 +12V
ATX_12V
DEBUG PORT
G.QBOFM
58
14
•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.
3/4) CPU_FAN/SYS_FAN1 (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 motherboard supports CPU fan speed control, which requires the use of a CPU
fan with fan speed control design. For optimum heat dissipation, it is recommended that a system fan be
installed inside the chassis.
CPU_FAN
DEBUG
PORT
G.QBOFM
1
SYS_FAN1
DEBUG
PORT
G.QBOFM
1PinNo. Denition
1GND
2 Voltage Speed Control
3 Sense
4 PWM Speed Control
- 13 -

PinNo. Denition
1 12V
2 G
3R
4 B
DEBUG
PORT
G.QBOFM
1
5) LED_CPU (CPU Cooler LED Strip/RGB LED Strip Header)
 TheheadercanbeusedtoconnectaCPUcoolerLEDstriporastandard5050RGBLEDstrip(12V/G/R/B),
with maximum power rating of 2A (12V) and maximum length of 2m.
ConnecttheCPUcoolerLEDstrip/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.
RGB
LED Strip
1
12V
6) SATA3 0/1/2/3 (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 SATA connectors support
RAID0,RAID1,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
SATA3
2
1
0
DEBUG
PORT
G.QBOFM
71
DEBUG
PORT
G.QBOFM
71
DEBUG
PORT
G.QBOFM
71
DEBUG
PORT
G.QBOFM
71
3
- 14 -

7) M2A_SOCKET (M.2 Socket 3 Connector)
 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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.
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 nut from the motherboard. Locate the proper mounting hole
fortheM.2SSDtobeinstalledandthenscrewthenutrst.
Slide the M.2 SSD into the connector at an angle.
Step 2:
Press the M.2 SSD down and then secure it with the screw.
Select the proper hole for the M.2 SSD to be installed and refasten the screw and nut.
F_USB30 F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3  
 S3 BSSS

U
 __ 3
F_USB3F
S  _
S  _
S  _
SF


B_
B_
F
_0
S
S
_0F
_F
_
_
__B


U
S  _S
_ SF_
USB0_B
B_ F_USB3
 F_USB303

_

_3U
80110 60 42
8) 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.
1
F_USB30 F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3  
 S3 BSSS

U
 __ 3
F_USB3F
S  _
S  _
S  _
SF


B_
B_
F
_0
S
S
_0F
_F
_
_
__B


U
S  _S
_ SF_
USB0_B
B_ F_USB3
 F_USB303

_

_3U
PinNo. Denition
1 5VDUAL
2NoPin
3 SPDIFO
4GND
- 15 -

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):
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,""PowerManagement,"for more
information).
•SPEAK (Speaker):
Connects to the speaker on the chassis front panel. The system reports
system startup status by issuing a beep code. One single short beep
will be heard if no problem is detected at system startup.
•PLED/PWR_LED (Power LED):
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).
•HD (Hard Drive Activity LED):
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):
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):
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: Noconnection.
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.
1
2
9
10
PinNo. Denition PinNo. Denition
1 MIC2_L 6 Sense
2GND 7FAUDIO_JD
3MIC2_R 8NoPin
4NC 9LINE2_L
5LINE2_R 10 Sense
SPEAK+ SPEAK-
Speaker
NC NC
Hard Drive
Activity LED
1
2
19
20
CI-
CI+
PLED- PW-
PLED+ PW+
HD-
RES+
HD+
RES-
Reset
Switch Chassis Intrusion
Header
Power Switch
F_USB30 F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3  
 S3 BSSS

U
 __ 3
F_USB3F
S  _
S  _
S  _
SF


B_
B_
F
_0
S
S
_0F
_F
_
_
__B


U
S  _S
_ SF_
USB0_B
B_ F_USB3
 F_USB303

_

_3U
Power LED
Power LED
PWR_LED-
PWR_LED+
PWR_LED-
- 16 -

PinNo. Denition PinNo. Denition
1 VBUS 11 D2+
2SSRX1- 12 D2-
3SSRX1+ 13 GND
4GND 14 SSTX2+
5 SSTX1- 15 SSTX2-
6 SSTX1+ 16 GND
7GND 17 SSRX2+
8 D1- 18 SSRX2-
9 D1+ 19 VBUS
10 NC 20 NoPin
11) F_USB30 (USB 3.1 Gen 1 Header)
 TheheaderconformstoUSB3.1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3.1Gen1ports,pleasecontactthelocal
dealer.
F_USB30 F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3  
 S3 BSSS

U
 __ 3
F_USB3F
S  _
S  _
S  _
SF


B_
B_
F
_0
S
S
_0F
_F
_
_
__B


U
S  _S
_ SF_
USB0_B
B_ F_USB3
 F_USB303

_

_3U
10
11
1
20
12) F_USB1/F_USB2 (USB 2.0/1.1 Headers)
 Theheadersconform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.
10
9
2
1
13) 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
1NDCD- 6NDSR-
2NSIN 7NRTS-
3NSOUT 8NCTS-
4NDTR- 9NRI-
5GND 10 NoPin
10
9
2
1
- 17 -

14) TPM (Trusted Platform Module Header)
You may connect a TPM (Trusted Platform Module) to this header.
20
19
2
1
DEBUG
PORT
G.QBOFM
PinNo. Denition PinNo. Denition
1 LCLK 11 LAD0
2GND 12 GND
3LFRAME 13 NC
4NoPin 14 NC
5LRESET 15 SB3V
6NC 16 SERIRQ
7 LAD3 17 GND
8 LAD2 18 NC
9 VCC3 19 NC
10 LAD1 20 NC
15) 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.
16) 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
- 18 -

Chapter 2 BIOS Setup
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.
•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.
(Sample BIOS Version: F1c)
•When the system is not stable as usual, select the Load Optimized Defaults item to set your system to its 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.
The Classic Setup 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.
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.
- 19 -

2-2 The Main Menu
Hardware
Information
CongurationItems Current Settings
Setup
Menus
System Time
Quick Access Bar allows you to enter Easy Mode, select
BIOSdefaultlanguage,congurefansettings,orenter
Q-Flash.
Classic Setup 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> 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
<F5> RestorethepreviousBIOSsettingsforthecurrentsubmenus
<F7> LoadtheOptimizedBIOSdefaultsettingsforthecurrentsubmenus
<F8> Access the Q-Flash utility
<F9> Display system information
<F10> Save all the changes and exit the BIOS Setup program
<F12> Capture the current screen as an image and save it to your USB drive
<Esc> Main Menu: Exit the BIOS Setup program
Submenus: Exit current submenu
- 20 -