Affordable entry-level microATX motherboard with AM4 processor socket and AMD B450 chipset. It features a practical layout and modest overall dimensions (24.4x24.0 cm), which allows it to be installed in compact microATX cases. Ensures correct operation of AMD Ryzen 1000/2000/3000/5000 (Summit Ridge, Pinnacle Ridge, Matisse, Vermeer), Ryzen 2000/3000/4000 (Raven Ridge, Picasso, Renoir) APUs and Athlon (Raven Ridge) CPUs.
It is positioned as a product of the base price category in 2021, focused on use in home and office configurations of entry-level and mid-range. The Asus PRIME B450M-A II motherboard is equipped with a six-phase processor power subsystem, made on the basis of a high-quality element base. With four DIMM slots, it can accept up to 128 GB of high-frequency DDR4 RAM (up to 4400 MHz). To build a high-speed storage subsystem, an M.2 port (PCI-E Gen3 x4) and 6 standard SATA3 connectors are provided. Realtek RTL8111H high-speed network controller performs real-time processing of network traffic.
The information in the model description is for reference purposes. Always clarify the specifications and configuration of the product with the online store manager before purchasing. Catalog Asus 2025 - new arrivals, bestsellers, and the most relevant models Asus.
When you make a purchase through links on our site, we may receive a affiliate commission.
ASUS PRIME B450M-A II AMD AM4 MATX 128GB DDR4 4DIMM HDMI DVI D-SUB PCIE 90MB15Z0-M0EAY0
Comprehensive cooling: VRM heatsink, PCH heat sink and Xpert 2+ fan
Ultra-fast connectivity: M.2 support, 1GB Ethernet and U... moreSB 3.2 Gen 2 Type-A
5X Protection III: Multiple hardware protection devices for all-round system protection
Aura Sync RGB Lighting: Onboard connector for RGB LED strips, easily synchronized with an ever growing portfolio of Aura Sync-enabled hardware
Package Weight: 1.02 kilograms
Package Dimensions: 11.5 L x 40.79 H x 31.5 W (centimeters)
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.
The UEFI BIOS is an early waypoint on any PC-building journey, and Prime B450 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.
ASUS PRIME B450M-A II AMD B450 Socket AM4 micro ATX 90MB15Z0-M0EAY0
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 2... moreType-A BIOS FlashBack™ and Aura Sync RGB lighting support
- Comprehensive cooling: VRM heatsink PCH heatsink and Fan Xpert 2+
- Ultrafast connectivity: M.2 support 1 Gb Ethernet and USB 3.2 Gen 2 Type-A
- 5X Protection III: Multiple hardware safeguards for all-around system protection
- Aura Sync RGB Lighting: Onboard connector for RGB LED strips easily synced with an ever-growing portfolio of Aura Sync-capable hardware
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.
Cool to the Core
Prime B450M II series is engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.
VRM Heatsink and Thermal Pads A VRM heatsink with underneath thermal pad improves heat transfer from the MOSFETs for better cooling performance. Cooler by Design Prime B450M-A II is engineered with an array of hybrid fan headers and features comprehensive cooling controls that are configurable via Fan Xpert 2+ 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 up to 22110 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
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.
Outstanding Audio
Combined onboard features deliver elevated audio Intelligent design and premium