AMD AM4 Socket: Ready for Ryzen� 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
Ultrafast Connectivity: Dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A support
Aura Sync RGB Lighting

Model PRIME B550M-A WIFI II
CPU AMD Ryzen� 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors

Memory Channels:4DDR4 (Dual channel) Max Memory Size:128GB 4 x DIMM, Max. 128GB, DDR4
Dual Channel Memory Architecture

Graphics
1 x D-Sub
1 x DVI-D
1 x D-Sub port
1 x DVI-D port
1 x HDMI� port**

AMD Ryzen� 5000 Series/ 3000 Series Desktop Processors 1 x PCIe 4.0 x16 slot (supports x16 mode)
AMD Ryzen� 5000 G-Series/ 4000 G-Series Desktop Processors 1 x PCIe 3.0 x16 slot (supports x16 mode)
AMD B550 Chipset 2 x PCIe 3.0 x1 slots

Storage Supports 2 x M.2 slots and 4 x SATA 6Gb/s ports

Wi-Fi 6
Supports 2.4/5GHz frequency band
Bluetooth v5.2

USB
Rear USB:Total 6 ports 2 x USB 3.2 Gen 2 ports (2 x Type-A) 4 x USB 3.2 Gen 1 ports (4 x Type-A)

Front USB:Total 6 ports
1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
2 x USB 2.0 headers support additional 4 USB 2.0 ports

Audio
Realtek 7.1 Surround Sound High Definition Audio CODEC

Back Panel I/O Ports
2 x USB 3.2 Gen 2 ports (2 x Type-A)
4 x USB 3.2 Gen 1 ports (4 x Type-A)
1 x D-Sub port
1 x DVI-D port
1 x HDMI� port
1 x Wi-Fi Module
1 x Realtek 1Gb Ethernet port
3 x Audio jacks
1 x PS/2 Keyboard/Mouse combo port

Internal I/O Connectors
Fan and Cooling related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
2 x 4-pin Chassis Fan headers

Power related
1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector

Storage related
2 x M.2 slots (Key M)
4 x SATA 6Gb/s ports

USB
1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
2 x USB 2.0 headers support additional 4 USB 2.0 ports

Miscellaneous

1 x Addressable Gen 2 header
2 x AURA RGB headers
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (AAFP)
1 x S/PDIF Out header
1 x Speaker header
1 x SPI TPM header (14-1pin)
1 x 10-1 pin System Panel header

BIOS 256 Mb Flash ROM, UEFI AMI BIOS

Accessories
Cables
2 x SATA 6Gb/s cables

Miscellaneous
1 x ASUS Wi-Fi moving antennas
1 x I/O Shield
1 x M.2 SSD screw package

Operating System Windows� 11, Windows� 10 64-bit
Form Factor microATX 24.4cm x 24.4cm