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Green rectangular micro-ATX board with black heatsinks, silver sockets and a silver I/O shield

ASRock

ASRock B550M WiFi AMD motherboard

SKU CH-D3DX-PDR5R MPN B550M WiFi

Micro-ATX AM4 board with Wi-Fi 6E, Bluetooth 5.2, PCIe 4.0 x16, DDR4 up to 4733 MHz OC and 128 GB capacity

  • ProcessorRyzen 3000 Series, Ryzen 3000 G-Series, Ryzen 4000 G-Series,
  • ChipsetAMD B550
  • Form factorMicro ATX
  • CPU socketAM4
  • South bridgeAMD B550
  • Memory slot count4 × 288pin (DDR4)

Model B550M WiFi

  • Supports Ryzen 5000 and 3000 series on AM4 socket
  • DDR4 memory scales to 4733 MHz overclocked for high speed
  • PCIe 4.0 x16 slot plus Hyper M.2 Gen4x4 for fast graphics and storage
  • Wi-Fi 6E with Bluetooth 5.2 and Realtek Gigabit LAN for low-latency networking
  • Realtek ALC1220 7.1 audio with Nahimic and Polychrome RGB headers for immersive sound and lighting

Compact AM4 platform for Ryzen 5000

The board uses the AMD B550 chipset on a Micro ATX PCB with an 8-phase power design and 2oz copper. It accepts Ryzen 3000, 4000 G-Series and 5000 series processors in the AM4 socket. Four DDR4 slots support up to 128GB in dual-channel mode.

Home builders needing Wi-Fi 6E and PCIe 4.0

Integrated Wi-Fi 6E with Bluetooth 5.2 and a Realtek 1GbE port cover wireless and wired networking. One PCIe 4.0 x16 slot and a Hyper M.2 Gen4x4 socket give modern GPU and SSD bandwidth. Builders who need more than two full-size PCIe slots should choose a full ATX board.

PCIe 4.0 x16 and Gen4 M.2 decide fit

The single PCIe 4.0 x16 slot and one M.2 socket running at PCIe 4.0 x4 set the expansion ceiling. If the build requires a second PCIe 4.0 x16 link or multiple Gen4 M.2 drives, this board will not match.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $79.99
Cheaper than about 83% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASRock
Product lineB550
Processor
ProcessorRyzen 3000 Series, Ryzen 3000 G-Series, Ryzen 4000 G-Series, Ryzen 5000 Series, Ryzen 5000 G-Series
CPU socketAM4
ChipsetAMD B550
Memory
Memory slot count4 × 288pin (DDR4)
Supported memoryDDR4 3200
Max supported RAM128 GB
Memory channelsDual Channel
Memory profilesIntel XMP
ECC supportYes
BufferingUn-buffered
Storage
SATA ports4 x SATA 6Gb/s
M.2 slots1 x M.2 (Support PCIe 4.0 x4)
SATA and RAID support0/1/10
Graphics
Onboard video chipAMD Radeon Vega Series
Audio & video
Audio chipRealtek ALC1220
Sound channels7.1 Channels
Connectivity
Ethernet controllerRealtek RTL8111H
Maximum network speed1 Gbit/s
Wi-Fi standardWiFi IEEE 802.11 a / b / g / n / ac / ax / axe
Bluetooth supportYes
Ports & slots
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16
PCIe x16 slots2 x PCI Express x16
PCIe x4 slots1 x PCI Express x4
PCIe x1 slots1 x PCI Express x1
Additional slots1 x M.2 Socket (Key E)
PS/2 ports1 x PS/2 keyboard/mouse port
Serial ports1
Video connectorsHDMI + Display Port
HDMI ports1 x HDMI
Ethernet port1 x RJ45
DisplayPort connectors1 x DisplayPort
USB 3.1 ports8 x USB 3.1
USB 3.0 ports8 x USB 3.0
USB 2.0 ports6 x USB 3.0 + 6 x USB 2.0
Audio jacks3 Ports
Onboard USB headers4 x USB 3.2 + 4 x USB 2.0
Power
Power connectors24 Pin
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
Shipping weight1.23 kg
Package size295 × 157 × 56 mm
Compatibility
Windows 11 supportSupported
More details
South bridgeAMD B550
LightingRGB

Other versions of this model

4 more in the same range

Questions about this item

What case and power connectors does the Micro ATX board need to fit and mount?

The board uses a standard Micro ATX form factor with a 24-pin ATX power connector, an 8-pin CPU power connector, and standard front-panel headers for power, reset and LEDs.

How is the Wi-Fi 6E module installed and what step is often missed?

The Wi-Fi 6E and Bluetooth 5.2 module is pre-installed in the Key E M.2 socket; the step often missed is attaching the two external antenna cables to the gold connectors before securing the rear I/O shield.

What maintenance or replacement will the Realtek ALC1220 audio codec need later?

The Realtek ALC1220 7.1-channel HD audio codec is soldered to the board and requires no routine maintenance or user replacement.

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