Asus PRIME Z370-A Series User manual

Motherboard
PRIME Z370-A II
Series

ii
E14608
First Edition
August 2018
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iii
Contents
Safety information...................................................................................................... vi
About this guide........................................................................................................ vii
PRIME Z370-A II specifications summary ................................................................ ix
Package contents..................................................................................................... xiv
Installation tools and components.......................................................................... xv
Chapter 1: Product Introduction
1.1 Motherboard overview............................................................................... 1-1
1.1.1 Before you proceed..................................................................... 1-1
1.1.2 Motherboard layout ..................................................................... 1-2
1.1.3 Central Processing Unit (CPU) ................................................... 1-4
1.1.4 System memory .......................................................................... 1-5
1.1.5 Expansion slots........................................................................... 1-7
1.1.6 Onboard buttons and switches.................................................... 1-9
1.1.7 Jumpers .................................................................................... 1-11
1.1.8 Onboard LEDs .......................................................................... 1-13
1.1.9 Internal connectors.................................................................... 1-14
Chapter 2: Basic Installation
2.1 Building your PC system...........................................................................2-1
2.1.1 CPU installation........................................................................... 2-1
2.1.2 Cooling system installation.......................................................... 2-2
2.1.3 Motherboard installation.............................................................. 2-5
2.1.4 DIMM installation......................................................................... 2-6
2.1.5 ATX power connection................................................................ 2-7
2.1.6 SATA device connection............................................................. 2-7
2.1.7 Front I/O connector ..................................................................... 2-8
2.1.8 Expansion card installation ......................................................... 2-9
2.1.9 M.2 installation .......................................................................... 2-12
2.1.10 ASUS fan holder installation ..................................................... 2-13
2.2 Motherboard rear and audio connections .............................................2-14
2.2.1 Rear I/O connection .................................................................. 2-14
2.2.2 Audio I/O connections............................................................... 2-16
2.3 Starting up for the first time.................................................................... 2-18
2.4 Turning off the computer ........................................................................2-18

iv
Chapter 3: BIOS Setup
3.1 Knowing BIOS ............................................................................................3-1
3.2 BIOS setup program .................................................................................. 3-2
3.2.1 EZ Mode...................................................................................... 3-3
3.2.2 Advanced Mode .......................................................................... 3-4
3.2.3 QFan Control............................................................................... 3-7
3.2.4 EZ Tuning Wizard ....................................................................... 3-9
3.3 My Favorites .............................................................................................3-12
3.4 Main menu ................................................................................................3-14
3.5 Ai Tweaker menu......................................................................................3-14
3.6 Advanced menu .......................................................................................3-16
3.6.1 Platform Misc Conguration...................................................... 3-16
3.6.2 CPU Conguration .................................................................... 3-16
3.6.3 System Agent (SA) Conguration ............................................. 3-17
3.6.4 PCH Conguration .................................................................... 3-17
3.6.5 PCH Storage Conguration....................................................... 3-17
3.6.6 PCH-FW Conguration ............................................................. 3-18
3.6.7 Thunderbolt(TM) Conguration................................................. 3-18
3.6.8 Onboard Devices Conguration................................................ 3-19
3.6.9 APM Conguration.................................................................... 3-20
3.6.10 USB Conguration .................................................................... 3-20
3.6.11 Network Stack Conguration..................................................... 3-20
3.6.12 HDD/SSD SMART Information ................................................. 3-20
3.7 Monitor menu ...........................................................................................3-21
3.8 Boot menu ................................................................................................3-21
3.9 Tool menu.................................................................................................3-23
3.9.1 ASUS EZ Flash 3 Utility ............................................................ 3-23
3.9.2 Secure Erase ............................................................................ 3-24
3.9.3 ASUS User Prole..................................................................... 3-25
3.9.4 ASUS SPD Information............................................................. 3-25
3.9.5 Graphics Card Information........................................................ 3-25
3.10 Exit menu..................................................................................................3-26
3.11 Updating BIOS.......................................................................................... 3-27
3.11.1 EZ Update................................................................................. 3-27
3.11.2 ASUS EZ Flash 3...................................................................... 3-28
3.11.3 ASUS CrashFree BIOS 3.......................................................... 3-30

v
Chapter 4: RAID Support
4.1 RAID configurations ..................................................................................4-1
4.1.1 RAID denitions .......................................................................... 4-1
Appendix
Notices .................................................................................................................... A-1
ASUS contact information...................................................................................... A-5

vi
Safety information
Electrical safety
• To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.
• When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
• Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
• Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
• Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
• If the power supply is broken, do not try to x it by yourself. Contact a qualied service
technician or your retailer.
Operation safety
• Before installing the motherboard and adding devices on it, carefully read all the manuals
that came with the package.
• Before using the product, ensure all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
• To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
• Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
• Place the product on a stable surface.
• If you encounter technical problems with the product, contact a qualied service
technician or your retailer.
• Your motherboard should only be used in environments with ambient temperatures
between 0°C and 40°C.

vii
About this guide
This user guide contains the information you need when installing and conguring the
motherboard.
How this guide is organized
This guide contains the following parts:
1. Chapter 1: Product Introduction
This chapter describes the features of the motherboard and the new technology it
supports. It includes description of the switches, jumpers, and connectors on the
motherboard.
2. Chapter 2: Basic Installation
This chapter lists the hardware setup procedures that you have to perform when
installing system components.
3. Chapter 3: BIOS Setup
This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.
4. Chapter 4: RAID Support
This chapter describes the RAID congurations.
Where to find more information
Refer to the following sources for additional information and for product and software
updates.
1. ASUS website
The ASUS website (www.asus.com) provides updated information on ASUS hardware
and software products.
2. Optional documentation
Your product package may include optional documentation, such as warranty yers,
that may have been added by your dealer. These documents are not part of the
standard package.

viii
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when trying to
complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
Typography
Bold text Indicates a menu or an item to select.
Italics Used to emphasize a word or a phrase.
<Key> Keys enclosed in the less-than and greater-than sign
means that you must press the enclosed key.
Example: <Enter> means that you must press the Enter or
Return key.
<Key1> + <Key2> + <Key3> If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+).

ix
CPU
Intel®Socket 1151 for Intel®Core™ 9000 series, 8th Generation Core™ i7 /
i5 / i3, Pentium®and Celeron®processors
Supports 14nm CPU
Supports Intel®Turbo Boost Technology 2.0*
* The Intel®Turbo Boost Technology 2.0 support depends on the CPU types.
Chipset Intel®Z370 Chipset
Memory
4 x DIMM, max. 64GB, DDR4 4000(O.C)* / 3866(O.C.)* / 3733(O.C.)* /
3600(O.C.)* / 3466(O.C.)* / 3400(O.C.)* / 3333(O.C.)* / 3300(O.C.)*
/ 3200(O.C.)* / 3000(O.C.)* / 2800(O.C.)* / 2666 / 2400 / 2133 MHz,
non-ECC, un-buffered memory
Dual channel memory architecture
Supports Intel® Extreme Memory Prole (XMP)
* Hyper DIMM support is subject to the physical characteristics of individual CPUs.
Please refer to Memory QVL(Qualified Vendors List) for details.
Expansion slots
2 x PCIe 3.0/2.0 x16 slots (supports x16, x8/x8, x8/x4+x4*, x8+x4+x4/x0**)
1 x PCI Express 3.0/2.0 x16 slot (max. at x4 mode, compatible with PCIe x1,
x2 and x4 devices)
4 x PCI Express 3.0/2.0 x1 slots
* PCIEX16_2 slot supports up to 2 Intel®PCIe NVME SSDs via a Hyper M.2 X16
series Card.***
** PCIEX16_1 slot supports up to 3 Intel®PCIe NVME SSDs via a Hyper M.2 X16
series Card.***
*** Hyper M.2 X16 series card sold separately. Install a Hyper M.2 X16 series card
and enable this card under BIOS settings.
VGA
Integrated Graphics Processor- Intel®UHD Graphics support
Multi-VGA output support: DisplayPort/HDMI/DVI-D ports
Supports DisplayPort 1.2* with max. resolution 4096 x 2304@60Hz
Supports HDMI 1.4b with max. resolution 4096 x 2160@30Hz
Supports DVI-D with max. resolution 1920 x 1200@60Hz
Supports Intel®InTru™ 3D/Quick Sync Video/Clear Video HD Technology/
Insider™
Supports up to 3 displays simultaneously
Multi-GPU
support
Supports NVIDIA®2-Way SLI™ Technology
Supports AMD®3-Way GPU CrossFireX™ Technology
USB
Intel®Z370 Chipset
- 6 x USB 3.1 Gen 1 ports (4 ports @mid-board, 2 ports @back panel)
- 6 x USB 2.0/1.1 ports (4 ports @mid-board, 2 ports @back panel)
Asmedia®USB 3.1 Gen 2 controller
- 1 x USB 3.1 Gen 2 port @back panel (teal blue, Type-A)
- 1 x USB 3.1 Gen 2 port @back panel (USB Type C™)
(continued on the next page)
PRIME Z370-A II specifications summary

x
PRIME Z370-A II specifications summary
Storage
Intel®CPU support with Intel®Rapid Storage Technology (RAID 0 &
RAID 1)
- PCIEX16_1 slot supports up to 3 Intel®PCIe NVME SSDs via a Hyper M.2
X16 series Card.*
- PCIEX16_2 slot supports up to 2 Intel®PCIe NVME SSDs via a Hyper M.2
X16 series Card.*
Intel®Z370 Chipset with RAID 0, 1, 5, 10 and Intel Rapid Storage
Technology support
- 1 x M.2_1 Socket 3 with M Key, type 2242/2260/2280/22110 storage
devices support (both SATA & X4 PCIE mode)**
- 1 x M.2_2 Socket 3 with M Key, type 2242/2260/2280 storage devices
support (PCIE mode only)***
- 6 x SATA 6.0 Gb/s ports (gray)
- Ready for Intel®Optane Memory
* Hyper M.2 X16 series card is sold separately. Install a Hyper M.2 X16 series
card and enable this card under BIOS settings.
** The M.2_1 socket shares SATA_1 port when use M.2 SATA mode device. Adjust
BIOS settings to use a SATA device.
*** The M.2_2 socket shares SATA_56 ports when use M.2 PCIE mode device in X4
mode. Adjust BIOS settings to use M.2 PCIE devices in X4 mode.
LAN
Intel®I219V Gigabit LAN Controller
ASUS LANGuard
ASUS Turbo LAN Utility
Audio
Realtek®S1220A 8-channel high definition audio CODEC featuring
Crystal Sound 3
- Power pre-regulator reduces power input noise to ensure consistent
performance
- Separate layer for left and right track, ensuring both sound deliver equal
quality
- Impedance sense for front and rear headphone outputs
- Audio shielding ensures precise analog/digital separation and greatly
reduced multi-lateral interference
- Internal audio Amplier to enhance the highest quality sound for
headphone and speakers
- Unique de-pop circuit to reduce start-up popping noise to audio outputs
- Premium Japan-made audio capacitors
- High quality 120dB SNR stereo playback output and 113dB SNR recording
input
- Supports up to 32-Bit/192kHz playback*
- DTS®Headphone:X™
- Supports jack-detection, multi-streaming, front panel jack-retasking (MIC)
- Optical S/PDIF out port at back I/O
* Due to limitations in HDA bandwidth, 32-Bit/192kHz is not supported for
8-Channel audio. 32-Bit/192kHz is only available under Windows®10.
(continued on the next page)

xi
PRIME Z370-A II specifications summary
ASUS Exclusive
Features
<Superb Performance>
OC Design: ASUS OptiMem
OC Design: ASUS PRO Clock Technology
5-Way Optimization
- Whole system optimization with a single click! Perfectly consolidates better
CPU performance, power saving, digital power control, system cooling and
app usages.
DIGI+ VRM
- Digital 8+1 phase power design with Dr. MOS
TPU
- Auto Tuning, GPU Boost
EPU
- EPU
Fan Xpert 4 featuring Fan Auto Tuning function and multiple
thermistors selection for optimized system cooling control.
Turbo App featuring system performance tuning, network priority, and
audio scene conguration for selected applications.
UEFI BIOS
CrashFree BIOS 3
EZ Flash 3
EZ Tuning Wizard
<Connectivity>
32Gb/s M.2 onboard - PCIe 3.0 x4
Intel®Thunderbolt 3 Support
- Blistering-fast 40Gb/s data transfers upgrades with ThunderboltEX 3 Card.
<EZ Management>
PC Cleaner
- Fast and easy way to get rid of unnecessary junk les
<Gaming>
AURA Sync
Turbo LAN
Turbo APP
<EZ DIY>
Q-Design
- ASUS Q-Shield
- ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED)
- ASUS Q-Slot
- ASUS Q-DIMM
- ASUS Q-Connector
(continued on the next page)

xii
PRIME Z370-A II specifications summary
ASUS Special
Features
M.2 Heat-sink Design
ASUS 5X Protection III
- ASUS SafeSlot - Protect your graphics card Investment
- ASUS LANGuard - Protects against LAN surges, lightning strikes and
static-electricity discharges!
- ASUS Overvoltage Protection - World-class circuit-protecting power
design
- ASUS DIGI+ VRM - Digital 8+1phase power design with Dr. MOS
- ASUS DRAM Overcurrent Protection: Enhanced DRAM overcurrent
protection
- ASUS Stainless - Steel Back I/O: 3X corrosion-resistance for greater
durability!
- ASUS ESD Guards - Enhanced ESD protection
- AI Suite 3
- Ai Charger
- MemOK!
ASUS Quiet
Thermal
Solution
Quiet Thermal Design:
- ASUS Fan Xpert 4
- ASUS Fanless M.2 heatsink Design
Back Panel I/O
Ports
1 x DisplayPort
1 x HDMI port
1 x DVI-D
1 x Optical S/PDIF out
1 x Intel LAN (RJ45) port
1 x USB 3.1 Gen 2 ports (teal blue, Type A)
1 x USB 3.1 Gen 2 port (USB TypeC™)
2 x USB 3.1 Gen 1 ports
2 x USB 2.0/1.1 ports
8-channel Audio I/O ports
(continued on the next page)

xiii
PRIME Z370-A II specifications summary
Internal I/O
connectors
2 x USB 3.1 Gen 1 connectors support additional 4 USB ports (19-pin)
2 x USB 2.0/1.1 connectors support additional 4 USB ports
1 x M.2 Socket 3 (for M Key, type 2242/2260/2280 devices, PCIE mode)
1 x M.2 Socket 3 (for M Key, type 2242/2260/2280/22110 devices, PCIE &
SATA mode)
6 x SATA 6.0Gb/s connectors
1 x CPU Fan header (4-pin) for both 3-pin (DC mode) and 4-pin (PWM
mode) CPU coolers control with auto detection support
1 x CPU OPT Fan header (4-pin)
1 x AIO Pump header (4-pin)
1 x M.2 Fan header (4-pin)
2 x Chassis Fan connectors (4-pin) for both 3-pin (DC mode) and 4-pin
(PWM mode) coolers control with auto detection support
1 x Aura RGB Strip header
1 x Front panel audio connector (AAFP)
1 x Thunderbolt header (5-pin) for ASUS ThunderboltEX series support
1 x TPM connector
1 x COM connector
1 x 24-pin EATX Power connector
1 x 8-pin EATX 12V Power connector
1 x System Panel(Q-Connector)
1 x MemOK! switch
1 x Power-on button
1 x CPU OV jumper
1 x Clear CMOS header
1 x Thermal Sensor header
1 x 5-pin EXT_FAN(Extension Fan) connector
BIOS
128 Mb Flash ROM, UEFI AMI BIOS, PnP, WfM2.0, SM BIOS 3.1, ACPI
6.1, Multi-language BIOS, ASUS EZ Flash 3, CrashFree BIOS 3, F11 EZ
Tuning Wizard, F6 Qfan Control, F3 My Favorites, Last Modied log, F12
PrintScreen, and ASUS DRAM SPD (Serial Presence Detect) memory
information.
Manageability WfM 2.0, DMI 3.1, WOL by PME, PXE
Support DVD
contents
Drivers
ASUS Utilities
EZ Update
Anti-virus software (OEM version)
Operating
system support
Windows®10 64-bit
Form factor ATX Form Factor, 12”x 9.6” (30.5cm x 24.4cm)
• Specications are subject to change without notice.
• Visit the ASUS website for the software manual.

xiv
Package contents
Check your motherboard package for the following items.
Motherboard 1 x ASUS PRIME Z370-A II motherboard
Cables 3 x Serial ATA 6.0 Gb/s cables
Accessories
1 x ASUS SLI HB BRIDGE (2-WAY-M)
1 x ASUS Q-Shield
1 x Q-Connector
1 x M.2 screw package
1 x CPU fan holder
Application DVD 1 x Motherboard support DVD
Documentation 1 x User guide
If any of the above items is damaged or missing, contact your retailer.

xv
Installation tools and components
PC chassis
Power supply unit
Intel®LGA1151 compatible CPU Fan
Intel®LGA1151 CPU
DIMM
SATA hard disk drive
Graphics card (optional)
Phillips (cross) screwdriver
SATA optical disc drive (optional)
1 bag of screws
The tools and components in the table above are not included in the motherboard package.
M.2 SSD module (optional)

xvi

ASUS PRIME Z370-A II Series 1-1
Chapter 1
Product Introduction
1
Chapter 1: Product Introduction
• Unplugthepowercordfromthewallsocketbeforetouchinganycomponent.
• Beforehandlingcomponents,useagroundedwriststraportouchasafelygrounded
objectorametalobject,suchasthepowersupplycase,toavoiddamagingthemdue
tostaticelectricity.
• HoldcomponentsbytheedgestoavoidtouchingtheICsonthem.
• Wheneveryouuninstallanycomponent,placeitonagroundedantistaticpadorinthe
bagthatcamewiththecomponent.
• Beforeyouinstallorremoveanycomponent,ensurethattheATXpowersupplyis
switchedofforthepowercordisdetachedfromthepowersupply.Failuretodoso
maycauseseveredamagetothemotherboard,peripherals,orcomponents.
1.1 Motherboard overview
1.1.1 Before you proceed
Takenoteofthefollowingprecautionsbeforeyouinstallmotherboardcomponentsorchange
anymotherboardsettings.

1-2 Chapter 1: Product Introduction
Chapter 1
Referto1.1.9 Internal connectorsand2.2.1 Rear I/O connectionformoreinformation
aboutrearpanelconnectorsandinternalconnectors.
1.1.2 Motherboard layout

ASUS PRIME Z370-A II Series 1-3
Chapter 1
Layout contents
Connectors/Jumpers/Buttons and switches/Slots Page
1. ATXpowerconnectors(24-pinEATXPWR;8-pinEATX12V) 1-19
2. LGA1151CPUsocket 1-4
3. CPUandpumpconnectors(4-pinCPU_FAN;4-pinCPU_OPT;4-pin
M.2_FAN;4-pinAIO_PUMP;5-pinEXT_FAN;4-pinCHA_FAN1-2)
1-18
4. DDR4DIMMslots 1-5
5. MemOK!button 1-10
6. Power-onbutton 1-9
7. USB3.1Gen1connectors(20-1pinU31G1_12;U31G1_34) 1-16
8. Intel®SerialATA6Gb/sconnectors(7-pinSATA6G_12;SATA6G_34;
SATA6G_56)
1-14
9. ClearRTCRAMjumper(2-pinCLRTC) 1-11
10. Systempanelconnector(20-3pinPANEL) 1-20
11. USB2.0connectors(10-1pinUSB910;USB1112) 1-17
12. TPMconnector(14-1pinTPM) 1-21
13. RGBheader(4-pinRGB_HEADER) 1-23
14. Serialportconnector(10-1pinCOM) 1-24
15. Frontpanelaudioconnector(10-1pinAAFP) 1-15
16. Thermalsensorconnector(2-pinT_SENSOR) 1-24
17. Thunderboltheader(5-pinTB_HEADER) 1-21
18. M.2sockets(M.2_1(Socket3);M.2_2(Socket3)) 1-22
19. CPUOverVoltagejumper(3-pinCPU_OV) 1-12

1-4 Chapter 1: Product Introduction
Chapter 1
1.1.3 Central Processing Unit (CPU)
ThismotherboardsupportstheIntel®Socket1151forIntel®Core™9000series,8th
GenerationCore™i7/i5/i3,Pentium®andCeleron®processors,withmemoryandPCI
Expresscontrollersintegratedtosupportdual-channel(4DIMM)DDR4memoryand16PCI
Express3.0/2.0lanes.
• EnsurethatallpowercablesareunpluggedbeforeinstallingtheCPU.
• Uponpurchaseofthemotherboard,ensurethatthePnPcapisonthesocketand
thesocketcontactsarenotbent.ContactyourretailerimmediatelyifthePnPcap
ismissing,orifyouseeanydamagetothePnPcap/socketcontacts/motherboard
components.ASUSwillshoulderthecostofrepaironlyifthedamageisshipment/
transit-related.
• Keepthecapafterinstallingthemotherboard.ASUSwillprocessReturnMerchandise
Authorization(RMA)requestsonlyifthemotherboardcomeswiththecaponthe
LGA1151socket.
• Theproductwarrantydoesnotcoverdamagetothesocketcontactsresultingfrom
incorrectCPUinstallation/removal,ormisplacement/loss/incorrectremovalofthePnP
cap.