GIGA-BYTE TECHNOLOGY GA-AX370-Gaming K7 User manual

To reduce the impacts on global warming, the packaging materials of this product
are recyclable and reusable. GIGABYTE works with you to protect the environment.
For more product details, please visit GIGABYTE's website.
GA-AX370-Gaming K7
User's Manual
Rev. 1001
12ME-AX37GK7-1001R

Copyright
©2017 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.
For quick set-up of the product, read the Quick Installation Guide included with the product.
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: http://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:
Motherboard
GA-AX370-Gaming K7
Feb. 24, 2017
Motherboard
GA-AX370-Gaming K7
Feb. 24, 2017

- 3 -
Table of Contents
GA-AX370-Gaming K7 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 Onboard Buttons, Switches and LEDs........................................................... 12
1-8 Internal Connectors........................................................................................ 13
Chapter 2 BIOS Setup ..................................................................................................22
2-1 Startup Screen ............................................................................................... 22
2-2 M.I.T. .............................................................................................................. 23
2-3 System ........................................................................................................... 26
2-4 BIOS............................................................................................................... 27
2-5 Peripherals..................................................................................................... 30
2-6 Chipset........................................................................................................... 32
2-7 Power............................................................................................................. 33
2-8 Save & Exit..................................................................................................... 35
Chapter 3 Appendix ......................................................................................................36
3-1 ConguringaRAIDSet.................................................................................. 36
3-2 Drivers Installation.......................................................................................... 38
3-3 Debug LED Codes ......................................................................................... 39
RegulatoryStatements.............................................................................................. 43
Contact Us ................................................................................................................ 48

- 4 -
GA-AX370-Gaming K7 Motherboard Layout
Box Contents
5GA-AX370-Gaming K7 motherboard 5I/O Shield
5Motherboard driver disk 5One GC-SLI2P bridge connector
5User's Manual 5OneRGB(RGBW)LEDstripextensioncable
5Quick Installation Guide 5One G Connector
5Four SATA cables 5Two thermistor cables
5Two Velcro Cable Ties
Socket AM4
KB_MS_USB30
CPU_FAN
SYS_FAN1
ATX
AUDIO
BAT
ATX_12V
CODEC
CLR_CMOS
M_BIOS
PCIEX16
PCIEX1_2
iTE®
Super I/O
GA-AX370-Gaming K7
F_PANEL
F_USB1F_AUDIO
SPDIF_O
PCIEX1_1
USB30_LAN2
AMD X370
F_USB2
TPM
BIOS_SW
LED_C1
R_USB30
HDMI
TYPEC
USB31
USB31_LAN1
CPU_OPT
CMOS_SW
RST_SW
OC
PW_SW
DDR4_2 DDR4_1 DDR4_4 DDR4_3
ASMedia®
USB 3.1 Gen 2
Controller
Intel®
GbE LAN
RivetNetworks
Killer™E2500 LAN
SYS_FAN2
SYS_FAN5_PUMP
EC_TEMP1
F_USB30_2
F_USB30_1
U2_32G
SATAEXPRESS
SATA3 7 6
5 4
SATA3 2 0
3 1
EC_TEMP2
SYS_FAN6_PUMP
SYS_FAN3
SYS_FAN4
CPU DRAM
VGA BOOT
Debug LED(Note) LED_C2
SB
PCIEX8
PCIEX1_3
PCIEX4
CODEC
M2F_32G
80 60 42
110
B_BIOS
BBIOS_LED MBIOS_LED
* 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.
(Note) Fordebugcodeinformation,pleaserefertoChapter3.

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™processor
(GotoGIGABYTE'swebsiteforthelatestCPUsupportlist.)
Chipset AMD X370
Memory 4xDDR4DIMMsocketssupportingupto64GBofsystemmemory
Dual channel memory architecture
SupportforDDR4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
 (GotoGIGABYTE'swebsiteforthelatestsupportedmemoryspeedsandmemory
modules.)
Onboard
Graphics
Integrated Graphics Processor:
 - 1xHDMIport,supportingamaximumresolutionof4096x2160@24Hz
* Support for HDMI 1.4 version.
- Maximum shared memory of 2 GB
Audio 2xRealtek®ALC1220 codecs
Support for Sound Blaster X-Fi MB5
HighDenitionAudio
2/4/5.1/7.1-channel
Support for S/PDIF Out
LAN 1 x Intel®GbELANchip(10/100/1000Mbit)(LAN1)
1xRivetNetworksKiller™E2500LANchip(10/100/1000Mbit)(LAN2)
* Teaming is not supported.
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.
1xPCIExpressx16slot,runningatx8(PCIEX8)(Note)
 * ThePCIEX8slotsharesbandwidthwiththePCIEX16slot.WhenthePCIEX8slot
is populated, the PCIEX16 slot operates at up to x8 mode.
(ThePCIEX16andPCIEX8slotsconformtoPCIExpress3.0standard.)
1xPCIExpressx16slot,runningatx4(PCIEX4)
* The PCIEX4 slot shares bandwidth with all of the PCI Express x1 slots. The PCIEX4
slot operates at up to x4 mode when all of the PCI Express x1 slots are empty.
3 x PCI Express x1 slots
* All of the PCI Express x1 slots share bandwidth with the PCIEX4 slot. The PCIEX4/
PCIEX1_2/PCIEX1_3 slot operates at up to x1 mode when the PCIEX1_1 slot is
populated; the PCIEX4 slot operates at up to x2 mode when the PCIEX1_2/PCIEX1_3
slot is populated.
 (ThePCIEX4andPCIExpressx1slotsconformtoPCIExpress2.0standard.)
Storage Interface Chipset:
 - 1xM.2connector(Socket3,Mkey,type2242/2260/2280/22110SATAand
PCIe x4 (Note)/x2SSDsupport)
- 1 x U.2 connector
 *WhentheU.2connectorispopulated,theM.2connectorbecomesunavailable.
(Note) ActualsupportmayvarybyCPU.
- 6 -

Storage Interface Chipset:
- 2 x SATA Express connectors
- 8 x SATA 6Gb/s connectors
 - SupportforRAID0,RAID1,andRAID10
 * Referto"1-8InternalConnectors,"fortheinstallationnoticesfortheM.2andSATA
connectors.
Multi-Graphics
Technology
Support for NVIDIA®Quad-GPU SLI™and2-WayNVIDIA®SLI™technologies
Support forAMD Quad-GPU CrossFireX™and2-WayAMDCrossFire™technologies
USB Chipset+ASMedia®USB 3.1 Gen 2 Controller:
- 1 x USB Type-C™port on the back panel, with USB 3.1 Gen 2 support
 - 1xUSB3.1Gen2Type-Aport(red)onthebackpanel
Chipset:
 - 2xUSB3.1Gen2Type-Aports(red)onthebackpanel
- 6x USB 3.1 Gen 1 ports (2portsonthebackpanel,4portsavailablethrough
theinternalUSBheaders)
- 4xUSB2.0/1.1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 U.2 connector
1 x M.2 Socket 3 connector
2 x SATA Express connectors
8 x SATA 6Gb/s connectors
1 x CPU fan header
1 x water cooling CPU fan header
4 x system fan headers
2 x system fan/water cooling pump headers
1 x front panel header
1 x front panel audio header
1 x S/PDIF Out header
2 x USB 3.1 Gen 1 headers
2 x USB 2.0/1.1 headers
1xTrustedPlatformModule(TPM)header
1xCPUcoolerLEDstrip/RGBLEDstripextensioncableheader
1xRGB(RGBW)LEDstripextensioncableheader
2 x temperature sensor headers
1 x Clear CMOS jumper
1 x power button
1 x reset button
1 x Clear CMOS button
1 x OC button
2 x BIOS switches
Back Panel
Connectors
1 x PS/2 keyboard/mouse port
1 x HDMI port
1 x USB Type-C™port, with USB 3.1 Gen 2 support
3xUSB3.1Gen2Type-Aports(red)
6 x USB 3.1 Gen 1 ports
2xRJ-45ports
1 x optical S/PDIF Out connector
- 7 -

Back Panel
Connectors
5xaudiojacks (Center/Subwoofer Speaker Out,RearSpeakerOut,Line In,
LineOut,MicIn)
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(pump)speedcontrolfunctionissupportedwilldependonthefan
(pump)youinstall.
BIOS 2x128Mbitash
Use of licensed AMI UEFI BIOS
Support for DualBIOS™
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
- 3D OSD
- AutoGreen
- BIOS Setup
- Cloud Station
- Color Temperature
- EasyTune
- Fast Boot
- Game Boost
- ON/OFF Charge
- RGBFusion
- Smart Backup
- Smart Keyboard
- Smart TimeLock
- System Information Viewer
- USB Blocker
- USB DAC UP 2
- V-Tuner
Support for Q-Flash
Support for Xpress Install
Bundled
Software Norton®InternetSecurity(OEMversion)
Operating
System
SupportforWindows1064-bit
SupportforWindows764-bit
* Pleasedownloadthe"WindowsUSBInstallationTool"fromGIGABYTE'swebsite
andinstallitbeforeinstallingWindows7.
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.
- 8 -

1-3 Installing the CPU
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
Please visit GIGABYTE's website
for support lists of CPU, memory
modules, SSDs, M.2, and U.2 devices.
Please visit the Support\Utility List
page on GIGABYTE's website to
download the latest version of apps.
1-4 Installing the Memory
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
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.
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.
- 9 -

Please visit GIGABYTE's website for details on hardware installation.
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.
PS/2 Keyboard/Mouse Port
Use this port to connect a PS/2 mouse or keyboard.
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.YoucanconnectaUSBDACtothisportorusethisportforUSBdevices.
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.
HDMI Port
The HDMI port is HDCP compliant and supports Dolby TrueHD and DTS HD
MasterAudio formats.Italso supportsupto192KHz/24bit 8-channelLPCM
audio output. You can use this port to connect your HDMI-supported monitor. The maximum supported
resolutionis4096x2160@24 Hz,butthe actualresolutionssupported aredependenton themonitor
being used.
1-6 Back Panel Connectors
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 and installed in the same colored sockets.
For optimum performance, when enabling Dual Channel mode with two memory modules, be sure to
installthemintheDDR4_1andDDR4_2sockets.
DualChannelMemoryCongurationsTable
DDR4_4 DDR4_2 DDR4_3 DDR4_1
Two Modules - - DS/SS - - DS/SS
Four Modules DS/SS DS/SS DS/SS DS/SS
(SS=Single-Sided,DS=Double-Sided,"--"=NoMemory)
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.)
- 10 -