ASUS Prime B250M-K Motherboard

Overview

Features

• 5X Protection III: Multiple hardware safeguards for all-round protection
• LED illumination: Lighting control audio trace paths
• Native M.2: Lightning-fast storage speeds
• UEFI BIOS and EZ Flash

PRIME

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.

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

Hardware safeguards to ensure long-term durability.

520+

DDR4 Compatibility

Industry-leading DDR4 memory compatibility for best flexibility and reassurance.

1000+

Compatible Devices

Compatibility with a range of CPUs, memory modules, graphics cards and more.

• SafeSlot
• Surge-Protected Networking
• Overvolatge Protection
• Stable Power Supply
• Stainless-Steel Back I/O

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.

SafeSlot Core | 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.

ASUS Prime motherboards have strengthened solder points around both the PCIe and DIMM pins.

LANGuard | 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.

Overvoltage Protection | 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.

DIGI+ VRM

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.

ESD Guards | 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.

• LAN port - ESD TVS diode protection on the LAN circuit.
• USB connectors - TVS diodes for surface-mount and dual-inline packages.
• VGA connectors - Additional on-circuit ESD TVS diodes to protect D-Sub functionality.
• Keyboard and mouse connectors - Additional on-circuit ESD transient-voltage-suppression diodes.

Proven Compatibility

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!

Top-to-bottom Reliability

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.

8000+ VALIDATION HOURS

Temperature and Humidity Test

Ensures components withstand extreme conditions.

Thermal Measurement Test

Ensures that the system remains cool and stable under the heaviest loads.

Insertion Test

Every port and connector is put through repeated installation cycles.

Aging Test

Up to 48-hour aging test ensures reliability.

Power Consumption Test

Checked for world-class energy efficiency.

Temperature and DC Margin Test

Ensures that the motherboard is capable of coping with Voltage fluctuations caused by varying temperatures.

Thermal Shock Test

Ensures ability to survive temperature changes during transportation.

Non-Operation Shock Test

Built to withstand jolts that may occur during shipping.

Burn-In Test

Every component is checked to ensure flawless operation in any environment.

Installation Test

Connector placement is double-checked to ensure hassle-free installation.

Drop Test

Drop tests from various heights ensure durability.

Salt and Spray Test

Tested for I/O reliability, prolonged lifespan and rust-resistance.

Superb Performance

DDR4 Support

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.

Enjoy the DDR4 benefits with Prime 200 series. (DDR4 vs DDR3)

Optimized Cooling

Fan Xpert 2+ | Dedicated CPU and case 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.

Game in Your Way

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.

Gaming Audio | Combined onboard features deliver elevated audio

Intelligent design and premium hardware create audio quality unlike anything you've ever experienced!

Noise isolation

• Audio shielding ensures precision analog/digital separation and greatly reduced multi-lateral interference.
• Separate layers for left and right tracks ensures both channels deliver consistent, equal quality.

Audio Enjoyment

• Premium Japanese audio capacitors provide warm, natural, and immersive sound with exceptional clarity and fidelity.

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

Ultrafast Transfer Speeds

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!

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!

Q-DIMM | 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!

One-Stop Controls | 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.

EZ Flash 3 - Update the BIOS via the internet, without leaving the BIOS interface.

S.M.A.R.T - Check your storage device Self-Monitoring, Analysis, and Reporting Technology logs to gauge reliability and possibly to determine potential failures.

Q-Fan Control - You can configure the fan's operating speed manually, or use the easy pre-configured fan profiles to select Standard, Silent, Turbo, or Full Speed modes!

My Favorite - Quickly find tuning options and add preferred tools to the list.

EZ Mode

• Intuitive graphical fan control - Fine-tune individual fans simply by dragging a curve with the mouse.
• EZ XMP - Improve DRAM performance with a click.
• SATA information - Easily display SATA port details for device identification.
• Fast clock adjustment - Use mouse controls to quickly change time and date setting

Advanced Mode

• Last modified log - Track last change and save preferred profiles onto a USB drive.
• SATA port renaming - Rename SATA ports for easy identification.

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.

Intel CPU and Chipset Features

Intel B250 Chipset

The Intel B250 is a single-chipset design that supports 7th & 6th-generation Intel LGA1151 Core i7 / Core i5 / Core i3 / Pentium / Celeron processors. It provides improved performance by utilizing serial point-to-point links, allowing increased bandwidth and stability. It natively supports up to six USB 3.0 ports, six SATA 6Gbit/s ports, and PCIe 3.0 lane speed support for faster data retrieval. Intel B250 chipset also supports iGPU functionality, so you'll enjoy the very latest Intel integrated graphics performance.

Ready for 7th Generation and 6th Generation Intel LGA1151 Core i7/Core i5/Core i3/Pentium/Celeron processors

The ASUS Prime 200 series motherboard supports 7th Generation and 6th Generation Intel Core i7/Core i5/Core i3/Pentium/Celeron processors in the LGA1151 package. Integrated graphics, memory and PCI Express controllers support onboard graphics output with dedicated chipsets, two-channel (4-DIMM) DDR4 memory and 16 PCI Express 3.0/2.0 lanes for great performance.

Specifications