Asus PRIME B550M-A (WI-FI) mATX AMD AM4 Motherboard


AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, Intel® WiFi 6, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB headers support

    • AMD AM4 socket: Ready for 3rd Gen AMD Ryzen™ Processors
    • Comprehensive cooling: VRM heatsink, PCH heatsink, and Fan Xpert 2+
    • Ultrafast connectivity: Dual M.2, PCIe 4.0, Intel® WiFi 6, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A
    • Aura Sync RGB: Onboard addressable Gen 2 header for RGB LED strips, easily synced with Aura Sync-capable hardware


Product Code:B550M-A (WI-FI)

Availability:Out of stock

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CPU Support:
AMD AM4 Socket 3rd Gen AMD Ryzen Processors


Motherboard Chipset:

Onboard Graphics:
1 x D-Sub 1 x DVI-D 1 x HDMI 2.1(4K@60HZ)

Expansion Slots:
3rd Gen AMD Ryzen™ Processors : 1 x PCIe 4.0 x16 (x16 mode) , AMD B550 Chipset : 2 x PCIe 3.0 x1

Realtek RTL8111H 1Gb Ethernet

Realtek ALC887 7.1 Surround Sound High Definition Audio CODEC - Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playback Audio Feature : - LED-illuminated design - Audio Shielding - Dedicated audio PCB layers

Storage: Sata Ports:
4 x SATA 6Gb/s ports

Storage: M.2 Slots:
2 x M.2 slots

Memory Type:
3rd Gen AMD Ryzen™ Processors :1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) , AMD B550 Chipset :1 x M.2 Socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes)

Memory: Max. Memory Support:
3rd Gen AMD Ryzen™ Processors : 128GB , Next Generation AMD Ryzen PRO Processors : 128GB

Memory: Architecture:
Dual Channel

Memory: Additional Info:
ECC Memory (ECC mode)

USB Ports: USB 2.0:
Rear USB Port : N/A , Front USB Port : 4 x USB 2.0 port(s)(4 x Type-A)

USB Ports: USB 3.2 Gen1:
Rear USB Port :4 x USB 3.2 Gen 1 port(s)(4 x Type-A) , Front USB Port : 2 x USB 3.2 Gen 1 port(s)(2 x Type-A)

USB Ports: USB 3.2 Gen2:
Rear USB Port : 2 x USB 3.2 Gen 2 port(s)(2 x Type-A)

Back I/O Ports:
1 x PS/2 keyboard/mouse combo port(s) 1 x DVI-D 1 x D-Sub 1 x HDMI 1 x LAN (RJ45) port(s) 2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A) 4 x USB 3.2 Gen 1 (blue) Type-A 3 x Audio jack(s) 1 x ASUS Wi-Fi Module

Internal I/O Ports:
1 x CPU Fan connector(s) 1 x CPU OPT Fan connector(s) 2 x Chassis Fan connector(s) 2 x Aura RGB Strip Headers 1 x Addressable Gen 2 header(s) 1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) 2 x USB 2.0 connect

Operating System:
Windows® 10 64-bit

Prime B550M-A (Wi-Fi)

ASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, Prime B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features.

VRM Heatsink and Thermal Pads

A VRM heatsink with underneath thermal pad improves heat transfer from the MOSFETs and chokes for better cooling performance.

Cooler by Design

Prime B550 series features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.
● Multiple Temperature Sources: Each header can dynamically reference three thermal sensors. Fan Xpert 2+ allows you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.

● 4-Pin PWM/DC Fan: Each onboard chassis fan header supports PWM and DC mode.

PCIe 4.0 M.2(up to 64 Gbps)

PCIe 4.0 M.2 Slot supports up to 22110 and provide NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with up to PCIe 4.0 storage device to enjoy the fastest data-transfer speeds on the 3rd Generation AMD Ryzen platform.

Intel® WiFi 6 AX200

The Intel® WiFi 6 AX200 module is compatible with the 802.11ax standard and pushes theoretical peak bandwidth up to an incredible 2.4 Gbps. Perhaps more importantly for power users, it's optimized for more efficient operation on crowded networks with a lot of competing traffic. Pair your motherboard with ASUS WiFi 6 routers to fully experience the networking potential of WiFi 6.
* Actual speed varies, and depends on networking conditions.

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.

Addressable Gen 2 RGB Header

The addressable Gen 2 RGB header is now capable of detecting the number of LEDs on second-gen addressable RGB devices, allowing the software to automatically tailor lighting effects to specific devices. The new header also offers backward-compatibility with existing Aura RGB gear.

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