ASUS Prime B450M-A/CSM AMD Ryzen 2 AM4 DDR4 HDMI DVI VGA M.2 USB 3.1 Gen2 mATX Motherboard
- Powered by 2nd generation AMD® Ryzen™ AM4 processors to maximize connectivity and speed with NVMe M.2, USB 3.1 Gen2, DDR4 and Gigabit LAN
- ASUS Corporate Stable Model complimentary Advance Replacement and long lifecycle with a COM header and PS2 ports for legacy needs
- 5X Protection III hardware-level safeguards provide component longevity and reliability
- Aura Sync RGB header provides a nearly endless spectrum of colors with the ability to synchronize effects across an ever-expanding ecosystem of enabled products
- Patent-pending SafeSlot Core fortified PCIe slot prevents damage caused by heavyweight GPUs
ASUS Prime B450 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 B450 Series motherboard, you build smart, easy and affordably.
Tune it your Way
Cooler by design
Prime B450 Series features the most comprehensive cooling controls ever, configurable via ASUS Fan Xpert software or the UEFI BIOS.
Make your memory faster
Featuring an array of trace layout tweaks that improve memory stability, PRIME B450 Series provides a potent foundation for your build. With comprehensive support for the full gamut of Ryzen memory configurations – from entry-level to performance-oriented – PRIME B450 Series is a versatile all-rounder that can work or play.
Media-acclaimed UEFI BIOS
The UEFI BIOS is an early waypoint on any PC-building journey, and Prime B450 Series has one of the best in the business.
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.
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.
Ultimate-speed 10Gbps with USB 3.1 Gen 2 onboard
With backward-compatible USB 3.1 Gen 2 Type-A™, you'll experience ultimate connection flexibility and blazing data-transfer speeds of up to 10Gbps – twice as fast as standard USB 3.1 Gen 1.
USB 3.1 Gen 1 is right where you need it, with two super-speed headers for the front panel. Experience data-transfer speeds up to 10X faster than USB 2.0 with instant plug-and-play connectivity, and avoid back-breaking contortions in the hunt for hard-to-reach rear ports.
Speed up with onboard M.2
With x4 PCI Express® 3.0/2.0 bandwidth, M.2 supports up to 32Gbps data-transfer speeds. It's the perfect choice for an operating system or application drive, providing fast access to data.
Affordable acceleration for any hard drive
AMD StoreMI technology is a software utility that accelerates any drive for better system responsiveness with reduced startup and software load times. It combines SSD performance with the affordability and capacity of an HDD by automatically moving frequently accessed data to dedicated SSD storage.
Native M.2/NVMe PCIe RAID Support for Lightning Fast Storage Speed!
Not satisfied with single-storage device read/write speeds? Then join the fast lane and build a RAID 0 array using two PCIe storage drives to enjoy data transfers at lightning speeds.
Reliable Stability and Compatibility
Built to Last
ASUS is the world's leading motherboard brand. Our motherboards are extensively tested for compatibility with more than 1,000 components and devices, and each new model undergoes a minimum of 8,000 hours of strict validation – offering the peace of mind of knowing that your ASUS motherboard is fit for all environments and applications. Choosing ASUS is an assurance of 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.
8000+ Validation Hours
Extensive testing with latest components for enhanced reliability, compatibility and safety.
Prime B450 Series 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 investment. That means exceptional protection and stability for your build – thanks to decades of engineering experience from the world's leading motherboard brand.
1000+ Compatible devices and components
The superior compatibility of Prime B450 Series is evidenced by our extensive list of supported devices – which includes thousands of compatible components – and our Qualified Vendor List (QVL) that identifies memory compatibility. It all adds up to more choices for worry-free PC-building experiences.
8000+ Validation Hours
ASUS motherboards offer 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.
Upgrade to Unrivalled Audio
Intelligent design and premium hardware create audio quality unlike anything you've ever experienced!
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-made audio capacitors
Premium parts provide an immersive sound signature, with exceptional fidelity.
Visual Beauty, Virtual Worlds
Outshine the competition
A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura Sync offers full lighting connected via the motherboard's RGB header, with a variety of functional presets for external LED strips.* And it can all be synced with an ever-growing portfolio of Aura-capable ASUS hardware.
LED-illuminated control for PCIe slot and trace paths
Built-in LED lighting options illuminate your build in a variety of eye-catching styles.
Complete your immersion
Prime B450 series isn't just VR ready – it goes way beyond. The ASUS Beyond VR Ready marque means that Prime B450 series has been tested with loads of class-leading components to ensure that your productivity, gaming and entertainment needs are tuned for maximum performance. ASUS Beyond VR Ready opens up a new way to configure and build your dream system with total confidence.
AM4 socket for AMD Ryzen™ 2nd Generation / Ryzen™ with Radeon™ VEGA Graphics / Ryzen™ 1st Generation Processors
The AMD Ryzen™ processor is based on the innovative Zen core architecture and features up to eight cores and Radeon™ Vega integrated graphics. Together with dual-channel DDR4 memory, native 5Gbps USB 3.1 Gen 1 and 16 PCI Express® 3.0/2.0 lanes, these AMD AM4-socket processors deliver superb computing performance.
AMD B450 chipset
The AMD B450 chipset delivers high performance and flexibility with the latest AMD® AM4-socket Ryzen™ processors. It also offers AMD StoreMI storage acceleration technology and provides two 10Gbps USB 3.1 Gen2 ports, two USB 3.1 Gen1 ports, and four 6Gbps SATA ports for faster data retrieval.
- Motherboard Type: Desktop
- Form Factor: Micro ATX
- Socket: AMD AM4
- Chipset: AMD B450
- #Hide#DDR Type: DDR4
- CPU Support: Click here for CPU support
- RAM Technology: DDR4 (Dual Channel)
- RAM Slots: 4 x DIMM
- RAM Speeds: 3200(O.C.)/3000(O.C.)/2800(O.C.)/2666/2400/2133 MHz
- Maximum Memory: 64GB
- Graphics: Integrated in the AMD Ryzen with Radeon Vega Graphics Processors
- Graphics Ports: 1 x VGA
1 x DVI-D
1 x HDMI
- Multi-GPU Support: –
- PCI/PCI Express: 1 x PCIe 3.0 x16 (x16 mode)
1 x PCIe 3.0 x16 (x8 mode)
2 x PCIe 2.0 x1
- Storage: 6 x SATA III
1 x M.2 (2242/2260/2280/22110) – SATA & PCIe
- RAID: “RAID 0, 1, 10”
- Wireless: –
- LAN: GB LAN
- Audio: Realtek ALC887 8-Channel High Definition Audio CODEC
- USB Ports Supported: “2 x USB 3.1 Gen2 (at back)
6 x USB 3.1 Gen1 (4 at back, 2 at mid-board)
4 x USB 2.0 (at mid-board)”
- Back Panel I/O Ports: 1 x PS/2 keyboard
1 x PS/2 mouse
1 x DVI-D
1 x D-Sub
1 x HDMI
1 x LAN (RJ45)
2 x USB 3.1 Gen 2
4 x USB 3.1 Gen 1
3 x Audio jacks
- Internal I/O Connectors: 1 x Aura RGB Strip
1 x USB 3.1 Gen 1
2 x USB 2.0
1 x M.2 Socket 3
1 x TPM
1 x COM port
6 x SATA 6Gb/s
1 x CPU Fan
2 x Chassis Fan
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 Speaker
- Accessories: Users manual
2 x SATA 6Gb/s cables
1 x M.2 Screw Package
1 x Supporting DVD
- Additional Features: See Overview
- Package Type: Retail
- Package Weight: 0.9040 kg
- Warranty: 3 Years
- #Hide#M.2 Slot(s): Yes (M.2)
- #Hide#No. LAN Ports: 1 x LAN
- #Hide#Max LAN Speed: GB LAN