Chipset: AMD B550

Dimensional format: ATX Form Factor (305 mm x 244 mm) Support for processors: AMD AM4 Socket 3rd Gen AMD Ryzen™ Processors Processor socket: AM4

Memory position: 4x DDR4 DIMM Memory support:

• 4600(OC)/4400(OC)/4266(OC)/4133(OC)/4000(OC)/3866(OC)/3733(OC)/3600(OC)/3466(OC)/3333(OC)/ 3200/3000/2800/2666/2400/2133 MHz ECC and non-ECC, Un-buffered Memory
• Next Generation AMD Ryzen PRO Processors - 4800(OC)/4600(OC)/4466(OC)/4400(OC)/4266(OC)/4133(OC)/4000(OC)/3866(OC)/3600(OC) )/3466(OC)/3200/3000/2800/2666/2400/2133 MHz ECC and non-ECC, Un-buffered Memory

Max. size of operating memory: 128 GB Support for memory type: DDR4

• Dual Channel Memory Architecture

Graphics Outputs: (CPU Based)

• 1x DisplayPort 1.2
• 1x HDMI 2.1 (4K@60HZ)

Multi-GPU:

• AMD 2-Way CrossFireX Technology

Sound card:

• Realtek ALC887 7.1-Channel High Definition Audio CODEC

Network card:

• Realtek® RTL8111H(ASUS LANGuard)

Expansion Slots:

• 1x PCIe 4.0 x16 (x16 mode)
• 1x PCIe 3.0 x16 (x4 mode)
• 3x PCIe 3.0 x1

RAID controller: 0, 1, 10

SATA:

• 6x SATA 6Gb/s port(s)

M.2:

• 1x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIe 4.0 x4 mode)
• 1x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)

USB:

• rear USB ports (8 in total)
• 2x USB 3.2 Gen 2 port(s) (1 x Type-A +1 x USB Type-C®)
• 4x USB 3.2 Gen 1 port(s) (4 x Type-A)
• 2x USB 2.0 port(s) (2 x Type-A)
• front USB ports (6 in total)
• 2x USB 3.2 Gen 1 port(s) (2 x Type-A)
• 4x USB 2.0 port(s) (4 x Type-A)

Internal ports:

• 1x CPU Fan connector(s)
• 1x CPU OPT Fan connector(s)
• 3x Chassis Fan connector(s)
• 1x AIO_PUMP connector
• 2x Aura RGB Strip Headers
• 1x Addressable Gen 2 header(s)
• 1x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s)
• 2x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
• 1x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIe 4.0 x4 mode)
• 1x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)
• 1x SPI TPM header
• 6x SATA 6Gb/s connector(s)
• 1x Thunderbolt header(s)
• 1x 24-pin EATX Power connector(s)
• 1x 8-pin EATX 12V Power connectors
• 1x Front panel audio connector(s) (AAFP)
• 1x Thermal sensor connector(s)
• 1x Clear CMOS jumper(s)
• 1x System panel connector
• 1x COM port header

External ports:

• 1 x DisplayPort
• 1x HDMI
• 1x LAN (RJ45) port(s)
• 2x USB 3.2 Gen 2 (teal blue) (1x Type-A+1x USB Type-C®)
• 4x USB 3.2 Gen 1 (blue) Type-A
• 2x USB 2.0
• 1x Optical S/PDIF out
• 5x Audio jack(s)

Package contents:

• User manual
• I/O Shield
• 2x SATA 6Gb/s cable(s)
• 1x Supporting DVD
• 1x M.2 SSD screw package(s)

BIOS: 256 Mb Flash ROM, UEFI AMI BIOS

Manufacturer page: https://www.asus.com/Motherboards/PRIME-B550-PLUS https://www.asus.com/microsite/motherboard/ASUS-motherboards-Win11-ready/ https://www.asus.com/support/FAQ/1046215