Asus Prime B550M-K is an AM4 socket motherboard equipped with the AMD B550 chipset for 3rd generation AMD Ryzen processors. The motherboard also supports next-generation AMD Ryzen processors with a BIOS update. The PCIe 4.0 support of the B550 chipset provides the necessary bandwidth for high-speed SSDs and next-generation graphics cards!

Asus Prime B550 series motherboards offer essential features for building a quality setup at an affordable price. Prime B550 motherboards are well suited for gaming and work use, providing high-quality power delivery even for the most powerful AMD Ryzen processors.

Features:

• Chipset: AMD B550
• Processor socket: AM4
• Processor support: 3rd generation Ryzen series processors
• Motherboard size: microATX
• Memory slots (pcs): 4
• Memory type: DDR4
• Maximum memory (GB): 128
• Network interfaces: Realtek RTL8111H 1Gb Ethernet
• Sound card: Realtek ALC887
• CrossFireX support: No
• SLI support: No

Expansion slots

• 1 x PCIe 4.0 x16 (x16 mode)
• 2 x PCIe 3.0 x1

Storage interfaces

• 1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110 (PCIe 4.0 x4 and SATA modes) storage device support
• 1 x M.2 Socket 3, with M Key, Type 2242/2260/2280 (PCIe 3.0 x4 and SATA modes) storage device support
• 4 x SATA 6 Gb/s ports, Support RAID 0, 1, 10

Rear panel connectors

• 1 x PS/2 keyboard/mouse combo port
• 1 x DVI-D
• 1 x D-Sub
• 1 x HDMI
• 1 x LAN (RJ45) port
• 2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A)
• 4 x USB 3.2 Gen 1 (blue) Type-A
• 3 x Audio jacks

Internal connectors

• 1 x CPU Fan connector
• 2 x Chassis Fan connectors
• 1 x USB 3.2 Gen 1 (up to 5 Gbps) connector supporting 2 additional USB 3.2 Gen 1 ports
• 2 x USB 2.0 connectors supporting 4 additional USB 2.0 ports
• 1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage device support (SATA & PCIe 4.0 x4 mode)
• 1 x M.2 Socket 3 with M key, type 2242/2260/2280 storage device support (SATA & PCIe 3.0 x4 mode)
• 1 x SPI TPM header
• 4 x SATA 6 Gb/s connectors
• 1 x S/PDIF out header
• 1 x 24-pin EATX power connector
• 1 x 8-pin EATX 12V power connector
• 1 x Front panel audio connector (AAFP)
• 1 x Clear CMOS jumper
• 1 x System panel connector
• 1 x COM port header
• 1 x Speaker connector