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Green micro ATX motherboard with silver heatsinks and black I/O shield

ASUS

ASUS 90MB1R80-M0VAY0 PRIME B550M-K WIFI AMD motherboard

SKU CH-2YBY-YY13H MPN 90MB1R80-M0VAY0

Micro-ATX AM4 board with B550 chipset, DDR4, PCIe 4.0, Wi-Fi 6, 1Gb Ethernet, dual M.2 and RGB headers

  • CPU Socket TypeAM4
  • CPU TypeRyzen 5000 Series, Ryzen 5000 G-Series, Ryzen 4000 G-Series,
  • ChipsetAMD B550
  • Channel SupportedDual Channel
  • ECC SupportedOnly
  • Buffer SupportedUn-buffered

Option PRIME B550M-K WIFI

  • Supports Ryzen 5000 and 3000 series CPUs via AM4 socket
  • PCIe 4.0 x16 slot and PCIe 4.0 M.2 slot for fast GPU and storage
  • WiFi 6 and Realtek 1Gb Ethernet give reliable wired and wireless links
  • Dual-channel DDR4 with 7.1-channel Realtek audio for responsive multitasking and sound
  • Micro ATX board at 9.6 x 8.7 inches fits compact builds with Aura Sync RGB control

Ready for Ryzen 5000 and 3000 Series

This micro-ATX board uses the AMD B550 chipset and AM4 socket to support Ryzen 5000 Series, 5000 G-Series, 4000 G-Series and 3000 Series desktop processors. Dual-channel DDR4 memory is supported with ECC capability on un-buffered modules. It targets builders who want a compact foundation for current Ryzen CPUs.

PCIe 4.0 M.2 and Wi-Fi 6 connectivity

A PCIe 4.0 x16 slot and PCIe 4.0 M.2 slot provide high-speed expansion for graphics and storage. Rear and front USB 5Gbps Type-A ports, DisplayPort, HDMI, Realtek 1Gb Ethernet and Wi-Fi 6 handle daily peripherals and networking. The PCH heatsink and hybrid fan headers managed by Fan Xpert 2+ keep thermals in check. Three addressable RGB Gen 2 headers work with Aura Sync lighting.

Check CPU cooler clearance and power phases

Verify that your chosen CPU cooler fits the micro-ATX layout around the AM4 socket. Confirm your power supply delivers the required ATX 24-pin and 8-pin CPU connectors for the board's power delivery. Ensure your case has a DisplayPort or HDMI cable route if you plan to use integrated graphics on G-Series processors.

Highlights

  • Supports Ryzen 5000 and 3000 series CPUs via AM4 socket
  • PCIe 4.0 x16 slot and PCIe 4.0 M.2 slot for fast GPU and storage
  • WiFi 6 and Realtek 1Gb Ethernet give reliable wired and wireless links
  • Dual-channel DDR4 with 7.1-channel Realtek audio for responsive multitasking and sound
  • Micro ATX board at 9.6 x 8.7 inches fits compact builds with Aura Sync RGB control

Specifications

BrandASUS
CPU Socket TypeAM4
CPU TypeRyzen 5000 Series, Ryzen 5000 G-Series, Ryzen 4000 G-Series, Ryzen 3000 Series
ChipsetAMD B550
Channel SupportedDual Channel
ECC SupportedOnly
Buffer SupportedUn-buffered
Audio ChipsetRealtek 7.1 Surround Sound High Definition Audio CODEC
Audio Channels7.1 Channels
BluetoothYes
COM1
DisplayPort1 x DisplayPort
Audio Ports3 Ports
Form FactorMicro ATX
Dimensions (W x L)9.6" x 8.7"
Shipping weight0.86 kg
Package size274 × 263 × 51 mm

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will a Ryzen 5000 series processor fit this AM4 socket?

Yes, the board supports Ryzen 5000 Series, 5000 G-Series, 4000 G-Series and 3000 Series desktop processors in the AM4 socket.

Does the board include built-in Wi-Fi 6 and Bluetooth?

Yes, Wi-Fi 6 and Bluetooth are integrated on the motherboard.

What memory type and channel mode does the board use?

It runs DDR4 in dual-channel mode with un-buffered modules; ECC is supported only.

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