ASUS Prime is the next evolution of the ASUS motherboard, born of a pedigree that stretches back to 1989. Our team of world-class engineers are passionate about empowering everyone to enjoy the benefits of customization and tuning, and the driving force behind the development of Prime is to make advanced enthusiast controls easily accessible – maximizing performance, stability and compatibility for the very best DIY PC experiences. Simply stated: it's time for Prime.
- Maximize your connectivity and speed with integrated Dual M.2 slots with Intel® Optane™ Memory compatibility and a rear USB 3.1 Type C connection
- 5X Protection III Hardware-level safeguards provide component longevity and reliability
- FanXpert 2 PLUS delivers advanced fan control with an integrated AIO pump header for dynamic cooling
- Dual Patent-pending SafeSlot Core fortified PCIe slot prevents damage caused by heavyweight GPUs
- On-board 3D-printing mounts for creating unique designs on your customized build
Reliable Stability and Compatibility
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.
5X Protection III
Prime 200 motherboards are engineered with industry-leading 5X Protection III, employing the finest components, excellent circuit design, and exacting standards to guarantee the quality and long-term durability of your motherboard. That means exceptional protection and stability for your build – thanks to decades of engineering experience from the world's leading motherboard brand.
Fortified PCIe with solid soldering – SafeSlot Core is the ASUS-exclusive PCIe slot. Featuring a fortified design that's anchored to the motherboard by a special hook, Safeslot Core provides 1.6x stronger retention and 1.3x greater shearing resistance than standard expansion slots.
Pumped-up throughput. 2.5x higher surge tolerance – ASUS LANGuard is hardware-level networking protection that employs signal-coupling technology and premium anti-EMI surface-mounted capacitors to ensure a more reliable connection and better throughput, plus electrostatically guarded and surge-protected components for greater tolerance to static electricity and improved protection against surges.
World-class circuit-protecting power design – An exclusive circuit design with built-in voltage regulators to protect your chipset, connectivity ports, and audio codecs from damage caused by unexpected high-level voltages from unstable or inferior power supplies.
Precision control for stable power – ASUS-exclusive DIGI+ VRM intelligently delivers power to the processor based on real-time demands, reducing energy waste and improving system stability.
DRAM Overcurrent Protection
Short-circuit damage prevention – Onboard resettable fuses prevent overcurrent and short-circuit damage. This extends beyond I/O ports to DRAM to safeguard the lifespan of your system and connected devices.
Stainless-Steel Back I/O
3x corrosion-resistance for greater durability – Corrosion-resistant stainless-steel back I/O panels bonded with chromium oxide have a lifespan that's three times longer than ordinary panels.
Electrostatic discharge protection – ASUS ESD Guards prevent damage from electrostatic discharge, up to +/- 10kV for air discharge and +/- 6kV for contact discharge, arranged in an active-protective-circuit design that prolongs the life of components.
Tested to be compatible with 1,000+ CPUs, DDR4 memory modules, graphics cards and more.
Having the freedom to pick and choose the parts that go into your machine is at the heart of PC DIY. Our extensive certification program focuses on providing the very best compatibility with the widest range of components and devices, giving you the freedom to build and upgrade without frustration. Compatible today and compatible far into the future – that's the ASUS way.
Extensive List of Supported Devices
View supported devices and Qualified Vendor List for compatible memory
The superior compatibility of Prime 200 series is evidenced by our extensive list of supported devices – which includes thousands of compatible components – and our Qualified Vendor List that identifies memory compatibility. That means more choices for worry-free PC-building experiences.
Great Compatibility with ASUS Products
ASUS offers a suite of proprietary components – graphics cards, sound cards, optical drives – that perfectly complement the Prime 200 series, so you can complete your custom motherboard build with confidence!
ASUS motherboards have superb endurance. We verify this by subjecting every board to more than 8,000 hours of stringent tests. A barrage of burn-in, environmental, compatibility, software and safety tests confirm that our motherboards are exceptionally robust. It also shows that ASUS reliability surpasses industry standards, ensuring that every component is designed to function flawlessly in any environment.
With DDR4, you'll accelerate memory frequencies up to an incredible to 2400MHz! And ASUS works with almost every DDR4 memory vendor, so you're assured the best compatibility.
Fan Xpert 2+
Advanced fan controls - With onboard thermal sensors and hardware-level 4-pin/3-pin PWM/DC mode detection, Fan Xpert 2+ makes sure every fan achieves the best balance of cooling performance and low noise!
- Auto-Tuning Mode: Scans fan parameters and all fans with a single click.
- Extreme Quite Mode: Reduces the CPU fan speed to below the default minimum, for extra-quiet operation and power savings during light loads.
Brighten Up Your Build
LED-illuminated control for trace paths
Built-in LED lighting options illuminate your build in a variety of eye-catching styles.
Combined onboard features deliver elevated audio
Intelligent design and premium hardware create audio quality unlike anything you've ever experienced!
All-round Energy Saving
Energy Efficient Design
EPU - With the Energy Processing Unit you'll enjoy system-wide power savings — with CPU-wattage reductions of up to 12W*! The EPU automatically optimizes power consumption and maximizes savings with Away mode: A setting that creates an extreme energy-saving scenario by shutting down unused I/O controllers and reducing power to the graphics cards while you're away.
* Intel LGA1151 i5-7400T, 35W | PRIME Z270-A | DRAM: Samsung 2133MHz 8GB*2 | PSU: Seasonic 400W (SS-400FL, efficiency 90% @ 20% loading) | Fan: VETTE Cooler | HDD: Samsung SSD 840 PRO 256GB | Display Output: HDMI | Windows 10
Intel Optane Memory Ready
Intel® Optane™ Memory is a revolutionary (non-volatile memory) technology supported by Prime 200-series motherboards. Intel Optane Memory modules accelerate attached storage to reduce boot and load times, so everything feels faster and more responsive.
Speed Up with Onboard M.2 Up to 32Gb/s
With x4 PCI Express 3.0/2.0 bandwidth, M.2 supports up to 32Gb/s data-transfer speeds. It is the perfect choice for an operating system or application drive, making your whole PC or professional apps work as fast as possible.
Instant front-panel USB 3.0 Experience
We've put USB 3.0 right where you need it - two super-speed ports on the front panel. Experience data-transfer speeds up to 10X faster than USB 2.0 with instant plug-and-play connectivity, so no more back-breaking contortions in the hunt for hard-to-reach rear ports!
USB Type-C for convenient connectivity
USB Type-C delivers futureproof device compatibility and high-speed connectivity, enabling data rates of up to 5Gb/s. Along with being 33% narrower and nearly 50% slimmer than traditional USB Type-A ports, the USB-C features a fully reversible port design — so connections are made the first time, every time.
Easy PC DIY
Safe Motherboard Mounting
Component-free areas to minimize damage risk.
Fitting your ASUS motherboard is now safer than ever. The comprehensive component-free 'safe zones' around every case-mounting hole minimizes the risk of damage and short circuits caused by contact — so you'll assemble your PC with total confidence!
Easy memory removal.
Even if you work with a smaller case, just push down on the one-sided clip and push or pull RAM modules in or out – removing memory is that simple!
Media-acclaimed UEFI BIOS
The smoothest, slickest mouse-controlled graphical BIOS has been improved to make it even more appealing. Whether you're a PC novice or a seasoned overclocker, EZ and Advanced modes help you find your way, quickly and easily.
AI Suite 3
One-stop access to innovative ASUS features.
ASUS AI Suite 3 offers a brand-new user experience through a clearer and more attractive interface with support for larger monitors. It consolidates all exclusive ASUS features into one simple-to-use package, allowing you to supervise overclocking, energy consumption, fan speeds, voltages and more. This all-in-one app offers diverse and easy-to-use functionality, with no need to switch back and forth between different utilities.
CPU Support Intel Socket 1151 for 7th/6th Generation Core i7/Core i5/Core i3/Pentium/Celeron Processors
- Supports Intel 14 nm CPU
- Supports Intel Turbo Boost Technology 2.0
Chipset Intel® B250 Memory 4x DIMM DDR4-2133, Un-buffered Memory, 64 GB max.
- Dual Channel Memory Architecture
- Supports Intel® Extreme Memory Profile (XMP)
Display Support Integrated Graphics Processor - Intel® HD Graphics support
Multi-VGA output support : HDMI / DVI-D / RGB ports
- 1 x HDMI v1.4
- 1 x DVI-D
- 1 x RGB
Supports up to 3 displays simultaneously.
Maximum shared memory of 1024 MB.
Expansion Slots All of the PCI Express slots conform to PCI Express 3.0 standard.
1 x PCI Express 3.0/2.0 x16 (x16 mode, gray)
2 x PCI Express 3.0/2.0 x1
Storage Intel® B250 Chipset :
1 x M.2 Socket 3, with M Key, type 2242/2260/2280 storage devices support (SATA mode & X4 PCIE mode)
1 x M.2 Socket 3, with M Key, type 2242/2260/2280 storage devices support (x4 PCIE mode)
6 x SATA 6Gb/s port(s)
LAN Realtek® RTL8111H, 1 x Gigabit LAN Controller(s)
ASUS LAN Guard
Audio Realtek® ALC887 8-Channel High Definition Audio CODEC
- Supports: Jack-detection, Front Panel Jack-retasking
USB Ports Intel® B250 Chipset:
6 x USB 2.0 port(s) (2 at back panel, black, Type-A, 4 at mid-board)
Intel® B250 Chipset:
4 x USB 3.0 port(s) (2 at back panel, blue, Type-A, 2 at mid-board)
Intel® B250 Chipset:
1 x USB 5Gb/s port(s) port(s) (1 at back panel, black, Type-C, Reversible, Support 3A power output)
Back Panel I/O Ports 1 x PS/2 mouse (green)
1 x PS/2 keyboard/mouse combo port(s)
1 x DVI-D
1 x D-Sub
1 x HDMI
1 x LAN (RJ45) port(s)
1 x USB 5Gb/s port(s) Type-C ( support 3A power output )
2 x USB 3.0 (blue) Type-A
2 x USB 2.0
3 x Audio jack(s)
Internal I/O Connectors 1 x USB 3.0 connector(s) support(s) additional 2 USB 3.0 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 storage devices support (PCIE mode only)
1 x M.2 Socket 3 with M Key, type 2242/2260/2280/22110 storage devices support (SATA mode & X4 PCIE mode)
1 x LPT header
1 x COM port(s) connector(s)
6 x SATA 6Gb/s connector(s)
1 x CPU Fan connector(s) (1 x 4 -pin)
2 x Chassis Fan connector(s) (2 x 4 -pin)
1 x S/PDIF out header(s)
1 x 24-pin EATX Power connector(s)
1 x 4-pin ATX 12V Power connector(s)
1 x Front panel audio connector(s) (AAFP)
1 x Internal speaker connector(s)
1 x System panel(s)
1 x Chassis Intrusion connector(s)
1 x Clear CMOS jumper(s)
1 x System panel connector
1 x Chassis intrusion header
Special Features ASUS 5X Protection III:
- ASUS SafeSlot 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 DIGI+ VRM: Phase digital power design
ASUS Exclusive Features:
- AI Suite 3
- AI Charger
ASUS Quiet Thermal Solution:
- Stylish Fanless Design Heat-sink solution & MOS Heatsink
- ASUS Fan Xpert 2+
ASUS EZ DIY:
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode
- Push Notice
- ASUS Q-Slot
- ASUS Q-DIMM
- 3D printing friendly
Supported OS Windows® 10, 64 bit
Windows® 8.1, 64 bit
Windows® 7, 32 bit/64 bit
Form Factor mATX Form Factor
24.4 x 20.6 cm
- Asus PRIME B250M-A mATX Motherboard
- User's Manual
- I/O Shield
- 2 x SATA 6Gb/s cable(s)
- 2 x M.2 Screws
- 1 x Supporting DVD