Asus Prime B450M-A AMD AM4 mATX Motherboard with Aura Sync RGB Header, DDR4 3200MHz, M.2, HDMI 2.0b, SATA 6Gbps and USB 3.1 Gen 2 | 90MB0YR0-M0EAY0



Fan Xpert 2+: Flexible controls for ultimate cooling and silence, plus GPU-temperature sensing for cooler gaming
Ultrafast connectivity: Supreme flexibility with USB 3.1 Gen 2 and native M.2
ASUS Aura Sync header: Onboard connector for RGB LED strips, easily synced with an ever-growing portfolio of Aura Sync-capable hardware
5X Protection III: Multiple hardware safeguards for all-around system protection

Cooler by design

Prime B450 Series features the most comprehensive cooling controls ever, configurable via ASUS Fan Xpert software or the UEFI BIOS.

Each header can be set to monitor and react to up to three thermal sensors. Via Fan Xpert, you can also assign a sensor to monitor the temperature of supported ASUS graphics cards to ensure optimal cooling during GPU- or CPU-intensive workloads.

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.

Q-Fan ControlCan 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 FunctionWhen 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.

USB 3.1 Gen 2 Type-A

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 front-panel connector

Future-proof connectivity

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.





Supported CPU

CPU Socket Type

CPU Type
AM4 socket for AMD Ryzen 2nd Generation/ Ryzen with Radeon Vega Graphics/ Ryzen 1st Generation Processors* Refer to for the AMD CPU support list.


AMD B450


Number of Memory Slots

Memory Standard
DDR4 3200(O.C)/ 3000(O.C)/ 2800(O.C)/ 2666/ 2400/ 2133* Refer to for the Memory QVL (Qualified Vendors List).

Maximum Memory Supported

Channel Supported
Dual Channel

Expansion Slots

PCI Express 3.0 x16
AMD Ryzen 2nd Generation/ Ryzen 1st Generation Processors1 x PCIe 3.0/2.0 x16 (x16 mode)AMD Ryzen with Radeon Vega Graphics Processor1 x PCIe 3.0/2.0 x16 (x8 mode)

PCI Express x1
2 x PCI Express 2.0 x1 slots

Storage Devices

SATA 6Gb/s
6 x SATA 6Gb/s

1 x M.2 socket 3 with M Key, Type 2242/2260/2280/22110 (PCIE 3.0 x4 and SATA modes) storage devices support** The M.2 Socket shares bandwidth with the SATA_5/6 ports, and therefore the SATA_5/6 ports cannot be used when an M.2 device is installed.


Onboard Video

Onboard Video Chipset
Integrated Graphics in the AMD Ryzen with Radeon Vega Graphics ProcessorsMulti-VGA output support: HDMI, DVI-D, D-Sub ports- Supports HDMI 2.0b with a maximum resolution of 4096 x 2160 @60Hz- Supports DVI-D with max. resolution up to 1920 x 1200 @60Hz- Supports D-Sub with max. resolution up to 1920 x 1200 @60Hz

Onboard Audio

Audio Chipset
Realtek ALC887

Audio Channels
8 Channels* Use a chassis with HD audio module in the front panel to support an 8-channel audio output.

Onboard LAN

LAN Chipset
Realtek RTL8111H

Max LAN Speed

Rear Panel Ports

1 x PS/2 keyboard (purple)1 x PS/2 mouse port (green)

Video Ports
1 x DVI-D port1 x D-Sub port

1 x HDMI

1 x RJ45

USB 3.1
2 x USB 3.1 Gen 2 ports4 x USB 3.1 Gen 1 ports

Audio Ports
3 Ports

Internal I/O Connectors

Onboard USB
1 x USB 3.1 Gen 1 (up to 5Gbps) connector(s) support(s) additional 2 USB 3.1 Gen 1 port(s) (19-pin)2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)

Other Connectors
1 x Aura RGB Strip Header1 x TPM header1 x COM port(s) connector(s)1 x CPU Fan connector(s) (1 x 4-pin)2 x Chassis Fan connector(s) (2 x 4-pin)1 x S/PDIF out header(s)1 x Front panel audio connector(s) (AAFP)1 x System panel(s)1 x Clear CMOS jumper(s)1 x Speaker connector

Physical Spec

Form Factor
Micro ATX

LED Lighting

Dimensions (W x L)
243.84 mm x 241.30 mm

Power Pin
1 x 24-pin EATX Power connector1 x 8-pin ATX 12V Power connector


Special Features:ASUS 5X Protection III:- ASUS SafeSlot Core: Fortified PCIe Slot prevents damage- ASUS LANGuard: Protects against LAN surges, lightning strikes and static-electricity discharges!- ASUS Overvoltage Protection: World-class circuit-protecting power design- ASUS Stainless-Steel Back I/O: 3X corrosion-resistance for greater durability!- ASUS DIGI+ VRM: 6 Phase digital power designASUS Exclusive Features:- AI Suite 3- Ai ChargerASUS Quiet Thermal Solution:- Stylish Fanless Design Heat-sink solution- ASUS Fan Xpert 2+ASUS EZ DIY:- ASUS CrashFree BIOS 3- ASUS EZ Flash 3- ASUS UEFI BIOS EZ Mode- Multi-language BIOSASUS Q-Design:- ASUS Q-Slot- ASUS Q-DIMMBIOS:128MB Flash ROM, UEFI AMI BIOS, PnP, SM BIOS 3.1, ACPI 6.1, Multi-language BIOS, ASUS EZ Flash 3, ASUS CrashFree BIOS 3, F3 My Favorite, Last Modified log, F12 PrintScreen, ASUS DRAM SPD (Serial Presence Detect) memory information, F6 Qfan ControlOperating System:Windows 10 64-bit


Package Contents
Accessories:User’s manualI/O Shield2 x SATA 6Gb/s cable(s)1 x M.2 Screw Package1 x Supporting DVD

10 in stock

SKU: 90MB0YR0-M0EAY0 Categories: , ,

Additional information

Weight 0.15 kg
Dimensions 150 × 150 × 10 cm


Model No.

90MB0YR0-M0EAY0 / #22867


0.15 Kg


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