Asus Prime Motherboard - PRIME Z370-A II

Item # ASUPRIMEZ370AII (Part # PRIME Z370-A II)
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ASUS Prime Z370 Series motherboards provide the solid foundation needed for your first build; plus loads of scope to grow with your ambitions. We've melded all the good stuff that's packed into the latest Intel processors with essential ASUS design and engineering; so you benefit from industry-leading technologies -including automated system tuning; comprehensive cooling controls; immersive onboard audio; and support for the ASUS Fan Extension Card. Build smart and easy with ASUS Prime Z370.

Power Delivery Enhancements

DR. MOS: The Prime Z370-A II's CPU VRM utilizes Dr. MOS power stages that combine high-side and low-side MOSFETs and drivers into a single package; delivering the power and efficiency that Intel's latest processors demand.

ProCool power connector: Compared with traditional power inputs; ProCool sockets are built to tight specifications to ensure flush contact with the PSU power lines. This lowers impedance; which helps to prevent hotspots and connector failure.

Tune it your way

5-Way Optimization: ASUS 5-Way Optimization makes your PC smart. One click takes care of complex tuning; dynamically optimizing essential aspects of the system to provide overclocking and cooling profiles that are tailored for your rig.

  • An automated tuning utility that optimizes overclocking and cooling profiles for your unique system configuration.
  • Fans stay whisper-quiet with everyday computing and deliver optimal airflow when the system is crunching through CPU or GPU-intensive tasks.
  • Stress test function helps optimize and overclock for CPU- or memory-centric workloads.

CPU performance boost: Unleash your PC's full performance with the ASUS Al Suite 3 utility. The TurboV Processing Unit (TPU) is the intelligence behind our automated system-tuning utility; offering the ability to fine-tune voltages; monitor system stats; and adjust overclock parameters for optimal performance.

All-round energy efficiency: With the Energy Processing Unit (EPU) you'll enjoy system-wide power savings. The EPU automatically optimizes power consumption and maximizes savings with Away mode-a smart setting that creates an extreme energy-saving scenario by shutting down unused I/O controllers.

Flexible cooling controls for air or liquid: With PRIME Z370-A II you have comprehensive control over fans; water pumps; and even all-in-one (AIO) coolers - all via Fan Xpert 4 or our media-acclaimed UEFI. Whether you're cooling with air or water; Auto-Tuning mode intelligently configures all parameters with a single click. There's also Extreme Quiet mode; which reduces all fan speeds to below the default minimum - keeping your system whisper-quiet when performing light tasks.

Precise digital power control: Digi+delivers real-time control over voltage droop; switching frequency and power - efficiency settings; allowing you to fine-tune CPU voltage regulation for ultimate stability and performance.

App specific optimization for professionals and gamers: Whether you're a professional designer or hardcore gamer; you'll feel the benefit of the ASUS-exclusive Turbo App. This intuitive tool allows you to define CPU overclocking; apply fan profiles; prioritize network data and optimize audio setting at app level - so your PRIME Z370-A II system is perfectly optimized for whatever you're doing.

Make your memory go faster

ASUS OptiMem preserves memory signal integrity by routing memory traces and visa to the optimal PCB layer; and our T-Topology layout ensures time-aligned signaling by balancing trace lengths between memory slots. These enhancements lead to more headroom for overclocking and improved stability; allowing memory speeds of DDR4-4000 and beyond with all slots populated.

Improved stability and overclocking with all slots populated

OC Design - ASUS Pro Clock Technology

PRIME Z370-A II includes a dedicated base-clock (BCLK) generator that extends CPU and memory overclocking margins. This custom solution works in tandem with the TPU to enhance voltage and BCLK overclocking control; providing the flexibility to extract every ounce of performance from the Intel Core 8th Generation processors.

Cooler by design

PRIME Z370-A II features the most comprehensive cooling controls ever; configurable via Fan Expert 4 or the UEFI BIOS.

  • Multiple temperature sources: Each header can be set to monitor and react to three thermal sensors; and via Fan Xpert 4 you can even assign a sensor to monitor the temperature of supported ASUS graphics cards - for optimal cooling during GPU- or CPU-intensive workloads.
  • AIO pump: A dedicated PWM/DC header for self-contained water-cooling setups.
  • 4-pin PWM/DC fan: Each onboard header supports auto-detection of PWM or DC fans.
  • ASUS Fan Extension Card support: Includes three additional DC or PWM fan headers; plus three thermal-probe headers.
  • Smart protection: A dedicated integrated circuit protects each fan header from over-temperature and over-current.

ASUS Fan Holder

With the all-new ASUS Fan Holder increasing airflow your Prime Z370 Series motherboard's VRM area is simple. Just screw on a 40/50mm fan; mount the bracket on the heatsink; and hook the fan up to a header for a targeted cooling boost. With the Fan Holder and fan in place; VRM temperatures are reduced by up to 25oC - perfect for your overclocking adventures.

Media-acclaimed UEFI BIOS

The smoothest; slickest mouse-controllable graphical BIOS has been improved to make it even more appealing. Whether you're a PC novice or a seasoned over clocker; EZ and Advanced modes will help you quickly find your way; quickly and easily.

Quickly apply a CPU overclock to improve system performance; or configure a RAID array for faster data retrieval and backups

Quickly discover tuning options and add preferred tools to the list.

Ultrafast connectivity


Speed up with onboard M.2 up to 32Gbps

  • With x4 PCI Express 3.0/2.0 bandwidth; M.2 supports up to 32Gbps data-transfer speeds. It's the perfect choice for an operating system or application drive; providing fast access to data.

M.2 heatsink

Keep your SSD cooler

  • PRIME Z370-A II has an ultra-efficient heatsink to reduce M.2 SSD temperatures by up to 20 degreeC - and that means optimal storage performance and improved SSD longevity.

Intel Optane memory

Intel Optane memory ready

  • Intel Optane is a revolutionary non-volatile memory technology supported by PRIME Z370-A II. Intel Optane memory modules accelerate attached storage to reduce boot and load times; so everything feels faster and more responsive.

USB 3.1 Gen 2 Type-A & Type-C

Ultimate-speed 10Gbps with USB 3.1 Gen 2 onboard

  • With backward-compatible USB 3.1 Gen 2 Type-A and reversible USB 3.1 Gen 2 Type-C ports; you'll experience ultimate connection flexibility and blazing data-transfer speeds of up to 10Gbps.

ThunderboltEX 3 Card

Experience blistering ThunderboltTM 3 speeds and any-way-up connectivity

  • PRIME Z370-A II provides full support for a ThunderboltEX 3 card. An Intel-certified Thunderbolt 3 add-on card enables breathtaking bi-directional speeds of up to 40Gbps through a single cable - up to 4X faster than other PC data-transfer protocols. Beyond sheer bandwidth; Thunderbolt 3 supports daisy-chaining up to six devices; utilizes a Type-C reversible connector for compatibility with the latest USB 3.1 Gen 2 Type-C devices; and meets USB Power Delivery specifications for fast; high-power charging of up to 36W.

Intel Ethernet

More throughput; less CPU usage

  • PRIME Z370-A II features the very latest Intel Ethernet. Intel's LAN has the advantage of reducing CPU overhead and offering exceptionally high TCP and UDP throughput for faster; smoother data transfer.

Reliable stability and compatibility

Safe Slot

Protect your graphics card investment

  • Safe Slot is the PCIe slot reinvented by ASUS and engineered to provide superior retention and shearing resistance. Manufactured in a single step using a new insert-molding process; Safe Slot integrates the slot with fortifying metal for an inherently stronger slot; which is then firmly anchored to the PCB through additional solder points.

Built to Last

ASUS is the world's foremost motherboard manufacturer; renowned for our unique Design Thinking approach. Our exhaustive testing exceeds industry standards; supported by high-quality components for exceptional real-world protection. Our motherboards are proven to be compatible with more than 1;000 components and devices; and each new model undergoes a minimum of 8;000 hours of strict validation. ASUS gives you the peace of mind of knowing that your motherboard is fit for all environments and applications. By choosing ASUS; you also gain the freedom to select outstanding component options; for trouble-free DIY experiences.

Upgrade to unrivalled audio

Outstanding audio

Realtek codec and unique design features for pristine; powerful audio

  • PRIME Z370-A II utilizes a unique audio codec designed in close collaboration with Realtek - the Realtek S1220A. It also features an unprecedented 120dB signal-to-noise ratio for the stereo line-out and a 113dB SNR for the line-in; providing pristine audio quality. Additionally; a new impedance-sensing circuit automatically adjusts gain to ensure the optimal volume range for your headphones.

DTS Headphone: X

Surround sound

  • Immersive 3D surround-sound technology provides incredible audio experiences.

Crystal Sound 3

Flawless audio that immerses you in the game

  • Power pre-regulator: Reduces power-input noise to ensure consistent performance.
  • Integrated amplifier: Capable of driving high-impedance headphones; without rolling-off high or low frequencies.
  • Audio shielding: Separates analog/digital signal domains; significantly reducing multi-lateral interference.
  • De-pop circuit: Reduces start-up popping noise to all audio outputs.
  • Separate layer for left and right tracks: Ensures minimal crosstalk between audio paths.
  • Premium Japanese-made audio capacitors: Premium parts provide an immersive sound signature; with exceptional fidelity.

Visual beauty; virtual worlds

Aura Sync

Outshine the competition

  • A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura Sync offers full RGB control with a variety of functional presets for the built-in RGB LEDs as well as the LED strips connected to the onboard RGB headers. And it can all be synced with an ever-growing portfolio of Aura-capable ASUS hardware.

Beyond VR ready

Complete your immersion

  • PRIME Z370-A II isn't just VR ready - it goes way beyond. The ASUS Beyond VR Ready marque means that PRIME Z370-A II has been tested with loads of class-leading components to ensure that your productivity; gaming and entertainment needs are tuned for maximum performance. ASUS Beyond VR Ready opens up a new way to configure and build your dream system with total confidence.

Product Features:

  • Ready for Socket 1151 for 9th / 8th Gen Intel Core; Pentium Gold and Celeron processors
  • Enhanced power solution: Premium components provide better power efficiency
  • 5-Way Optimization: One-click; system-wide tuning delivers optimized overclocks and intelligent cooling for CPU or GPU-intensive tasks
  • ASUS OptiMem: Careful routing of traces and visa to preserve signal integrity for improved memory overclocking
  • Industry-leading cooling options: Comprehensive controls for fans and water pumps; via Fan Expert 4 software or the acclaimed ASUS UEFI
  • Next-gen connectivity: Supreme flexibility with Intel Optane memory ready; Thunderbolt 3 and dual M.2 support
  • M.2 heatsink: Ultra-efficient heatsink reduces M.2 SSD temperatures by up to 20 degreeC for unthrottled transfer speeds and enhanced reliability
  • ASUS Aura Sync: Controllable onboard RGB lighting that can be easily synced with an ever-growing portfolio of Aura-capable hardware



  • Intel Socket 1151 9th / 8th Gen Intel Core; Pentium Gold and Celeron Processors
  • Supports Intel 14 nm CPU
  • Supports Intel Turbo Boost Technology 2.0


  • Intel Z370


  • 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(O.C.)/2400(O.C.)/2133 MHz Non-ECC; Un-buffered Memory
  • Dual Channel Memory Architecture
  • Supports Intel Extreme Memory Profile (XMP)


  • Integrated Graphics Processor- Intel HD Graphics support
  • Multi-VGA output support : HDMI/DVI-D/DisplayPort ports
    • Supports HDMI with max. resolution 4096 x 2160 30 Hz
    • Supports DVI-D with max. resolution 1920 x 1200 60 Hz
    • Supports DisplayPort with max. resolution 4096 x 2304 60 Hz
  • Maximum shared memory of 1024 MB (for iGPU exclusively)
  • Supports Intel InTru 3D; Quick Sync Video; Clear Video HD Technology; Insider
  • Supports up to 3 displays simultaneously
  • DP 1.2 Multi-Stream Transport compliant; supports DP 1.2 monitor daisy chain up to 3 displays

Multi-GPU Support

  • Supports NVIDIA 2-Way SLI Technology
  • Supports AMD 3-Way Crossfire Technology

Expansion Slots

  • 2 x PCIe 3.0/2.0 x16 (x16; x8/x8; x8/x4+x4; x8+x4+x4/x0)
  • 1 x PCIe 3.0/2.0 x16 (max at x4 mode)
  • 4 x PCIe 3.0/2.0 x1


  • 1 x M.2 Socket 3; ; with M key; type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)
  • 1 x M.2 Socket 3; ; with M Key; type 2242/2260/2280 storage devices support (PCIE mode only)
  • 6 x SATA 6Gb/s port(s); gray
  • Support Raid 0; 1; 5; 10
  • Intel Rapid Storage Technology supports
  • Intel Optane Memory Ready


  • Intel I219V; 1 x Gigabit LAN Controller(s)
  • ASUS Turbo LAN Utility
  • ASUS LAN Guard


  • Realtek S1220A 8-Channel High Definition Audio CODEC featuring Crystal Sound 3
    • Impedance sense for front and rear headphone outputs
    • Internal audio Amplifier to enhance the highest quality sound for headphone and speakers
    • Supports : Jack-detection; Multi-streaming; Front Panel MIC Jack-retasking
    • High quality 120 dB SNR stereo playback output and 113 dB SNR recording input (Line-in)
    • Front panel audio connector (AAFP)
    • Supports up to 32-Bit/192kHz playback
  • Audio Feature :
    • DTS Headphone:X
    • Audio Shielding: Ensures precision analog/digital separation and greatly reduced multi-lateral interference
    • Dedicated audio PCB layers: Separate layers for left and right channels to guard the quality of the sensitive audio signals
    • Premium Japanese-made audio capacitors: Provide warm; natural and immersive sound with exceptional clarity and fidelity
    • Unique de-pop circuit: Reduces start-up popping noise to audio outputs
    • Power pre-regulator: Reduces power input noise to ensure consistent performance

USB Ports

  • AS Media USB 3.1 Gen 2 controller :
    • 1 x USB 3.1 Gen 2 port(s) (1 at back panel; teal blue; Type-A; Support 3A power output)
  • AS Media USB 3.1 Gen 2 controller :
    • 1 x USB 3.1 Gen 2 port(s) (1 at back panel; ; USB Type-CTM; Support 3A power output)
  • Intel Z370 Chipset :
    • 6 x USB 3.1 Gen 1 port(s) (2 at back panel; ; 4 at mid-board)
  • Intel Z370 Chipset :
    • 6 x USB 2.0 port(s) (2 at back panel; ; 4 at mid-board)

Special Features

  • OC Design - ASUS PRO Clock Technology
    • Full BCLK range for extreme overclocking performance
  • 5-Way Optimization by Dual Intelligent Processors 5
    • Whole system optimization with a single click! 5-Way Optimization tuning key perfectly consolidates TPU; EPU; DIGI+ Power Control; Fan Expert 4; and Turbo App together; providing better CPU performance; efficient power saving; precise digital power control; whole system cooling and even tailor your own app usages.
  • ASUS 5X Protection III :
    • ASUS Safe Slot Core: Fortified PCIe Slot prevents damage
    • ASUS LANGuard: Protects against LAN surges; lightning strikes and static-electricity discharges!
    • ASUS Overvoltage Protection: World-class circuit-protecting power design
    • ASUS Stainless-Steel Back I/O: 3X corrosion-resistance for greater durability!
    • ASUS Enhanced DRAM Overcurrent Protection - Short circuit damage prevention
    • ASUS ESD Guards - Enhanced ESD protection
  • ASUS TPU :
    • Auto Tuning
    • GPU Boost
  • ASUS EPU :
    • EPU
  • AURA :
    • Aura Lighting Control
    • Aura RGB Strip Headers
    • Aura Lighting Effects Synchronization with compatible ASUS ROG devices
  • ASUS Exclusive Features :
    • MemOK!
    • AI Suite 3
    • Ai Charger
    • Turbo LAN
    • Crystal Sound 3
    • PC Cleaner
  • ASUS Quiet Thermal Solution :
    • Stylish Fanless Design Heat-sink solution
    • ASUS Fan Expert 4
    • Precision Tweaker 2
    • ASUS O.C. Tuner
    • ASUS O.C. Profile
    • ASUS Crash Free BIOS 3
    • ASUS EZ Flash 3
    • Multi-language BIOS
  • ASUS Q-Design :
    • ASUS Q-Shield
    • ASUS Q-LED (CPU; DRAM; VGA; Boot Device LED)
    • ASUS Q-Slot
    • ASUS Q-Connector

Back I/O Ports

  • 1 x DVI-D
  • 1 x DisplayPort
  • 1 x HDMI
  • 1 x LAN (RJ45) port(s)
  • 1 x USB 3.1 Gen 2 Type-A;
  • 1 x USB 3.1 Gen 2 USB Type-CTM
  • 2 x USB 3.1 Gen 1
  • 2 x USB 2.0
  • 1 x Optical S/PDIF out
  • 5 x Audio jack(s)

Internal I/O Ports

  • 1 x Aura RGB Strip Header
  • 2 x USB 3.1 Gen 1(up to 5Gbps) connector(s) support(s) additional 4 USB 3.1 Gen 1 port(s) (19-pin)
  • 2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
  • 1 x M.2 Socket 3 with M Key; type 2242/2260/2280/22110 storage devices support (SATA mode & X4 PCIE mode)
  • 1 x M.2 Socket 3 with M Key; type 2242/2260/2280 storage devices support (PCIE mode only)
  • 6 x SATA 6Gb/s connector(s)
  • 1 x CPU Fan connector(s) (1 x 4 -pin)
  • 1 x CPU OPT Fan connector(s) (1 x 4 -pin)
  • 2 x Chassis Fan connector(s) (2 x 4 -pin)
  • 1 x Thunderbolt header(s)
  • 1 x 24-pin EATX Power connector(s)
  • 1 x 8-pin ATX 12V Power connector(s)
  • 1 x Front panel audio connector(s) (AAFP)
  • 1 x System panel(s) (Q-Connector) (Chassis intrusion header is inbuilt)
  • 1 x 5-pin EXT_FAN(Extension Fan) connector
  • 1 x MemOK! button(s)
  • 1 x CPU OV
  • 1 x Power-on button(s)
  • 1 x Clear CMOS jumper(s)
  • 1 x 14-1 pin TPM connector
  • 1 x COM port header
  • 1 x T_Sensor Connector
  • 1 x AIO PUMP Header
  • 1 x M.2 Fan Header


  • User's manual
  • ASUS Q-Shield
  • 1 x ASUS Fan Holder
  • 3 x SATA 6Gb/s cable(s)
  • 1 x M.2 Screw Package
  • 1 x Supporting DVD
  • 1 x SLI HB BRIDGE(2-WAY-M)
  • 1 x Q-connector(s) (1 in 1)


  • 128 Mb Flash ROM; UEFI AMI BIOS; PnP; WfM2.0; SM BIOS 3.1; ACPI 6.1; Multi-language BIOS;
  • ASUS EZ Flash 3; Crash Free BIOS 3; F11 EZ Tuning Wizard; F6 Qfan Control; F3 My Favorites; Last Modified log;
  • F12 Print Screen; and ASUS DRAM SPD (Serial Presence Detect) memory information.


  • WfM 2.0; DMI 3.1; WOL by PME; PXE

Operating System

  • Windows 10 64-bit

Form Factor

  • ATX Form Factor: 12.0 inch x 9.6 inch ( 30.5 cm x 24.4 cm )
This Kit Includes: