Please note that our call centre and Washington location will be closed from 12/04/25 and repoen 21/04/25.
Please direct all customer service requests to our email or contact form, we will reply to you as soon as possible. All orders will be shipped as normal from our warehouse during this time.
AMD B450 (Ryzen AM4) micro ATX motherboard with M.2 support HDMI/DVI-D/D-Sub SATA 6 Gbps 1 Gb Ethernet USB 3.2 Gen 1 Type-A BIOS FlashBack™
Comprehensive cooling: PCH heatsink and Fan Xpert
Ultrafast connectivity: M.2 support 1 Gb Ethernet and USB 3.2 Gen 1 Type-A
5X Protection III: Multiple hardware safeguards for all-around system protection
LED illumination: Lighting control for both PCIe slot and audio trace paths
Prime
ASUS Prime B450M II Series motherboards provide the solid foundation needed for your first build plus flexibility to grow with your ambitions. We've 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.
Tune It Your Way
Comprehensive controls form the foundation of the ASUS Prime series. The Prime B450M II motherboard packs flexible tools to tune every aspect of your system enabling you to tweak performance settings to perfectly match the way you work – maximizing your productivity.
Cooler by Design
PRIME B450M-K II is engineered with an array of hybrid fan headers and features comprehensive cooling controls that are configurable via Fan Xpert software or via the UEFI BIOS ensuring your rig stays cool and stable under intense workloads.
Build on a Solid Foundation
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.
Achieve speed with onboard M.2
M.2 Slot supports 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 1 Type-A
Numerous USB ports support high-end rigs loaded with peripherals including four rear-panel USB Type-A connectors with fast USB 3.2 Gen 1 connectivity for compatible cases.
Separates analog/digital signal domains significantly reducing multi-lateral interference.
Separate Layer for Left and Right Tracks
Ensures minimal crosstalk between audio paths.
Premium Japanese Capacitors
Premium parts provide an immersive sound signature with exceptional fidelity.
BIOS FLASHBACK™
BIOS FlashBack™ is the simplest and safest (UEFI) BIOS update method. 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.
SafeSlot Core
Fortified PCIe slot prevents damage
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.
Overvoltage Protection
World-class circuit-protecting power design
An exclusive circuit design with built-in voltage regulators to protect your motherboard from damage caused by unexpected high-level voltages from unstable or inferior power supplies.
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.
LANGuard
Pumped-up throughput 2.5X higher surge tolerance
ASUS LANGuard is a hardware-level network protection feature that integrates advanced signal-coupling technology and premium anti-EMI surface-mounted capacitors to improve throughput and ensure a more reliable connection.
Storage: 4 x SATA III 1 x M.2 (2242/2260/2280) - SATA & PCIe* *PCIe mode not supported with Athlon CPUs
RAID: "RAID 0 1 10"
Wireless: -
LAN: GB LAN
Audio: Realtek ALC887/897 7.1-Channel High Definition Audio CODEC
USB Ports Supported: "6 x USB 3.2 Gen1 (4 at back 2 at mid-board) 6 x USB 2.0 (2 at back 4 at mid-board)"
Back Panel I/O Ports: 1 x PS/2 keyboard/mouse 1 x DVI-D 1 x D-Sub 1 x HDMI 1 x LAN (RJ45) 4 x USB 3.2 Gen1 Type-A 2 x USB 2.0 3 x Audio jacks 1 x BIOS FlashBack Button
Internal I/O Connectors: 1 x CPU Fan 1 x Chassis Fan 1 x USB 3.2 Gen1 2 x USB 2.0 1 x M.2 Socket 3 with M key 1 x SPI TPM 1 x COM port 4 x SATA 6Gb/s 1 x S/PDIF out 1 x 24-pin EATX 1 x 8-pin ATX 12V 1 x Front audio
.: 1 x System panel 1 x Clear CMOS jumper 1 x COM port header 1 x Speaker
Accessories: Users manual I/O Shield 2 x SATA 6Gb/s cables 1 x M.2 Anchor 1 x Supporting DVD
Additional Features: See Overview
Package Type: Retail
Package Weight: 0.8600 kg
Warranty: 3 Years
M.2 Slot(s): Yes (M.2)
No. LAN Ports: 1 x LAN
Max LAN Speed: GB LAN
90MB1600-M0EAY0
57 Items
Data sheet
Form Factor
mATX
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