ASUS AMD B550M PRIME B550M-A (Ryzen AM4) mATX MB, Dual M.2, PCIe 4.0, 1Gb Ethernet, HDMI/D-Sub/DVI, SATA 6Gbps, USB 3.2 Gen 2 A, Aura Sync RGB PRIME B550M-A

ASUS AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB headers support
AMD AM4 socket: Ready for 3rd Gen AMD Ryzen™ Processors
Comprehensive cooling: VRM heatsink, PCH heatsink, and Fan Xpert 2+
Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A
Aura Sync RGB: Onboard addressable Gen 2 header for RGB LED strips, easily synced with Aura Sync-capable hardware

CPU Build in AMD AM4 Socket 3rd Gen AMD Ryzen™ Processors *
Chipset AMD B550
Memory 3rd Gen AMD Ryzen™ Processors
4 x DIMM, Max. 128GB, DDR4
Graphic 1 x D-Sub
1 x DVI-D
1 x HDMI 2.1(4K@60HZ)
Expansion Slots 3rd Gen AMD Ryzen™ Processors
1 x PCIe 4.0 x16 (x16 mode)
AMD B550 Chipset
2 x PCIe 3.0 x1
Storage Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports
Support Raid 0, 1, 10
LAN Realtek RTL8111H 1Gb Ethernet
USB Ports Rear USB Port ( Total 6 )
2 x USB 3.2 Gen 2 port(s)(2 x Type-A)
4 x USB 3.2 Gen 1 port(s)(4 x Type-A)
Front USB Port ( Total 6 )
Operating System Windows® 10 64-bit
Form Factor mATX Form Factor
9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )