ASUS PRIME B550M-A WI-FI II

Chipset: AMD B550

Size format: micro ATX (24.4cm x 24.4cm)
Support for processors: AMD Ryzen 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors

Memory positions: 4 x DIMM DDR4 Dual Channel Memory Architecture
Memory support: 4866(OC)/4800(OC)/4600(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000 (OC)/3866(OC)/3733(OC)/3600(OC)/3466(OC)/3400(OC)/3333(OC)/3200/3000/2933/2800/2666/2400/2133 MHz
Max. size of operating memory: 128 GB
Support for memory type: ECC

Sound card: Realtek 7.1 Surround Sound High Definition Audio CODEC

Network card:

• 1 x Realtek 1Gb Ethernet
• Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
• Bluetooth 5.2

Expansion Slots:

• 2 x PCIe 4.0 x16 slots
• 2 x PCIe 3.0 x1 slots

RAID controller: RAID 0, 1, 10

SATA: 4 x SATA 6Gb/s ports

M.2: 2 x M.2 slots

USB:

• Internal:
• 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
• External:
• 2 x USB 3.2 Gen 2 ports (2 x Type-A)
• 4 x USB 3.2 Gen 1 ports (4 x Type-A)

Internal ports:

• 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

External 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

BIOS: UEFI AMI BIOS, 256 Mb Flash ROM