ASUS AMD PRIME B450M-K II AM4 PCIe 3.0 mATX Motherboard

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Prime B450M-K II - AMD Ryzen mATX Motherboard from ASUS
b450

MICRO-ATX MOTHERBOARD WITH AURA SYNC

The ASUS Prime B450M K II motherboard provides the solid foundation needed for your first build, plus flexibility to grow with your ambitions. ASUS have melded all the good stuff that's packed into AMD Ryzen™ processors with essential ASUS design and engineering, so you benefit from industry-leading technologies — including automated system tuning, comprehensive cooling controls, and immersive onboard audio. When you build with an ASUS Prime B450M II Series motherboard, you build smart, easy and affordably.

AMD B450 Chipset

AM4 CPU Socket

Micro ATX Form Factor

Enhanced UEFI BIOS

EASILY FIND YOUR WAY WITH EZ AND ADVANCED MODES

The UEFI BIOS is an early waypoint on any PC-building journey, and Prime B450M II Series has one of the best in the business. The EZ mode makes it incredible easy to overclock a CPU to improve performance or even configure a RAID array for faster data retrieval and backups. Whether you're a PC novice or a seasoned overclocker, EZ and Advanced modes will help you quickly find your way, quickly and easily.

qfan control

Q-FAN CONTROL

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, plus automatic switch to full speed if the temperature hits 75°C.

search

SEARCH FUNCTION

When you're ready for a deeper dive, Advanced mode enables full control over every aspect of the motherboard — with a built-in Search function to find the setting you need in the blink of an eye.

Cooler by Design

sensors

RESPONSIVE SURFACE CALIBRATION

Prime B450M-A II is engineered with great comprehensive cooling controls, configurable via ASUS Fan Xpert software or the UEFI BIOS. Each header can monitor and react to dedicated thermal sensors. Each onboard CHA FAN header supports PWM and DC mode. A dedicated integrated circuit protects the fan headers, including short circuit and over temperature protections.

Speed Up With Onboard M.2

m.2

ULTRAFAST M.2 CONNECTIVITY

Prime B450M II motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options. The onboard M.2 Slot supports drives up to 80mm and data-transfer speed up to 32Gbps via x4 PCI Express® 3.0 bandwidth. It‘s the perfect choice for an operating system or application drive, providing fast access to data.

USB 3.2 Gen 2 Type A Ports

USB

UPDATE WITH BIOS FLASHBACK™

Numerous USB ports support high-end rigs loaded with peripherals, including two rear-panel USB Type-A connectors with fast USB 3.2 Gen 2 connectivity for compatible cases. Simply drop the (UEFI) BIOS file onto a FAT32 formatted USB stick, plug it into the USB BIOS FlashBack™ port and press the button. Updates can even be performed without having memory or a CPU installed.

One-stop Efficient Controls

EPU

VERSATILE ENERGY PRODUCTIVITY

The Energy Processing Unit (EPU) automatically amplifies power consumption and maximises savings with Away mode. The smart setting that produces an extreme energy-saving setup by shutting down unused I/O controllers, with the EPU you will appreciate system-wide power reserves.

ASUS SafeSlot Protection

safe slot

PROTECT YOUR GRAPHICS CARD INVESTMENT

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.

Exceptional Audio

audio

COMBINED FEATURES DELIVER ELEVATED AUDIO

ASUS intelligent design combined with the finest hardware produce audio quality unlike anything you have ever experienced. With Audio Shielding, this separates layers for left and right tracks and analogue/digital signal domains, significantly decreasing multi-lateral interference. Exceptional components and Japanese-made audio capacitors, deliver an immersive sound signature with excellent fidelity.

B450 Tried and Tested

TOP-TO-BOTTOM RELIABILITY WITH 8000+ VALIDATION HOURS

The Prime B450M II series provides superior compatibility with thousands of components and our Qualified Vendor List (QVL) identifies memory compatibility, giving you more choices for worry-free PC-building experiences. Every ASUS motherboard is subjected to more than 8,000 hours of stringent tests, including burn-in, environmental, compatibility, software and safety tests to confirm their durability. ASUS reliability surpasses industry standards, ensuring that every component is designed to function flawlessly in any environment.

tests

TEMPERATURE AND HUMIDITY TESTS

Ensures components withstand extreme conditions.

tests

THERMAL MEASUREMENT TESTS

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

tests

INSERTION TESTS

Every port and connector is put through repeated installation cycles.

tests

AGING TESTS

Up to 48-hour aging test ensures reliability.

tests

POWER-CONSUMPTION TESTS

Delivers world-class energy efficiency.

tests

TEMPERATURE AND DC MARGIN TESTS

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

tests

THERMAL-SHOCK TESTS

Ensures ability to survive temperature changes during transportation.

tests

NON-OPERATION SHOCK TESTS

Built to withstand jolts that may occur during shipping.

tests

BURN-IN TESTS

Every component is checked to ensure flawless operation.

tests

INSTALLATION TESTS

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

tests

DROP TESTS

Drop tests from various heights ensure durability.

tests

SALT AND SPRAY TESTS

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

compatibility

1000+ COMPATIBLE DEVICES

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

valid

8000+ VALIDATION HOURS

Extensive testing with latest components for enhanced reliability, compatibility and safety.

General

Product Type Motherboard - micro ATX
Chipset Type AMD B450
Processor Socket Socket AM4
Max Processors Qty 1
Compatible Processors Athlon, Ryzen (supports 1st,2nd and 3rd Generation Ryzen / Ryzen with Radeon Vega Graphics and 2nd Generation Ryzen with Radeon Graphics / Athlon with Radeon Vega Graphics)

Supported RAM

Max Size 64 GB
Technology DDR4
Bus Clock 2400 MHz, 2133 MHz, 2666 MHz, 2800 MHz (O.C.), 3000 MHz (O.C.), 3200 MHz (O.C.), 3400 MHz (O.C.), 3466 MHz (O.C.), 3733 MHz (O.C.), 3600 MHz (O.C.), 3866 MHz (O.C.), 4000 MHz (O.C.), 4400 MHz (O.C.), 3533 MHz (O.C.)
Supported RAM Integrity Check Non-ECC, ECC
Registered or Buffered Unbuffered
Features Dual channel memory architecture

Audio

Type HD Audio (8-channel)
Compliant Standards High Definition Audio

LAN

Network Controller Realtek RTL8111H
Network Interfaces Gigabit Ethernet

Expansion / Connectivity

Expansion Slots 1 x CPU ¦ 2 x DIMM 288-pin ¦ 1 x PCIe 3.0 x16 (x16 mode (with 1st, 2nd and 3rd Generation Ryzen CPU); x8 mode (with Ryzen with Radeon Vega Graphics and 2nd Generation Ryzen with Radeon Vega Graphics); x4 mode (with Athlon with Radeon Vega Graphics)) ¦ 2 x PCIe 2.0 x1
Storage Interfaces SATA-600 -connectors: 4 x 7pin Serial ATA - RAID 0 / RAID 1 / RAID 10 ¦ SATA-600 / PCIe 3.0 -connectors: 1 x M.2
Interfaces 1 x LAN (Gigabit Ethernet) ¦ 1 x PS/2 keyboard / mouse ¦ 1 x audio line-in - mini-jack ¦ 1 x audio line-out - mini-jack ¦ 1 x microphone - mini-jack ¦ 1 x HDMI ¦ 1 x DVI-D ¦ 2 x USB 2.0 ¦ 4 x USB 3.2 Gen 1 ¦ 1 x VGA
Internal Interfaces 4 x USB 2.0 - header ¦ 2 x USB 3.2 Gen 1 - header ¦ Serial - header ¦ 1 x SPDIF out - header ¦ 1 x audio - header ¦ 1 x speaker - header
Power Connectors 24-pin main power connector, 8-pin ATX12V connector

Features

BIOS Type AMI
BIOS Features BIOS FlashBack, UEFI BIOS, ASUS EZ Flash 3
Hardware Features Jack retasking, ASUS Q-Design, ASUS TurboV EVO, Q-DIMM, ASUS EZ DIY, Q-Slot, CrashFree BIOS 3, audio jack detect technology, ASUS EPU (Energy Processing Unit), ASUS Fan Xpert, ASUS DIGI+ VRM, ASUS Stainless Steel Back I/O, LANGuard, ASUS Overvoltage Protection, Lighting Control, ASUS 5X Protection III, ASUS SafeSlot Core, Armoury Crate

Miscellaneous

Included Accessories I/O back cover, 1 x M.2 anchor
Cables Included 2 x Serial ATA cable
Software Included Drivers & Utilities, ASUS AI Charger, ASUS CPU-Z, ASUS AI Suite III, ASUS EZ Update, PC Cleaner, ASUS EZ Flash 3, DAEMON Tools, WinRAR, Norton AntiVirus (60 days trial)
Width 22.6 cm
Depth 22.1 cm