*Model*	*MSI B550M-A PRO*
*CPU*	*AMD Ryzen™ 5000/4000/3000 Series (Zen 3/2/1), Ryzen™ 5000/4000G APUs (Cezanne/Renoir). / Socket: AM4*
*Chipset*	*AMD® B550 Chipset*
*BIOS*	*128Mb SPI Flash ROM (Supports UEFI, ACPI 6.1).*
*Operating System*	*Support for Windows® 10 64-bit*
*Form Factor*	*MATX (9.6" x 9.6" / 244mm x 244mm)*
*Memory*	Slots: 2x DDR4 DIMM (Dual-Channel). / Max Capacity: 64GB (2x32GB). / Speeds: 1DPC (1 DIMM per channel): 5100+(OC) / 4800(OC) / 4600(OC) 4400(OC) / 4266(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3400(OC) / 3333(OC) / 3200(JEDEC) / 2933(JEDEC) / 2667(JEDEC) / 2400(JEDEC) / 2133(JEDEC). / ECC Support: No (Non-ECC Unbuffered only).
*Expansion Slots*	*PCIe x16: 1x PCIe 4.0 x16 slot (steel-reinforced). / PCIe x1: 1x PCIe 3.0 x1 slot.*
*Graphics*	*1x HDMI™ // 1x DVI-D // DirectX 12*
*Storage*	*M.2: 1x M.2 Key M (PCIe 4.0 x4 / SATA III, up to 2280). // SATA III: 4x ports (6Gb/s).*
*USB*	*USB 3.2 ports (Front): 2(Gen 1, Type A) / USB 3.2 ports (Rear): 4(Gen 1, Type A) / USB 2.0 ports (Front): 4 / USB 2.0 ports (Rear): 2 (Type A)*
*Audio*	*Codec: Realtek® ALC892. / Capabilities: 7.1-Channel HD Audio.*
*Back Panel I/O Ports*	1x USB 3.2 Gen 2: Type-A (10Gbps) / 2x USB 3.2 Gen 1: Type-A (5Gbps) / 4x USB 2.0: Type-A (480Mbps) / 1x PS/2 Combo: Keyboard/Mouse / 1x LAN: Realtek® 8111H Gigabit Ethernet / 3xAudio: Realtek® ALC892 7.1-Channel (Line-In, Line-Out, Mic-In)
*Internal I/O Connectors*	Fan Headers: 1x CPU PWM (4-pin). - 1x SYS PWM (4-pin). // USB: 1x USB 3.2 Gen 1 (5Gbps, Type-A internal). - 2x USB 2.0 (480Mbps). // TPM: 1x SPI TPM header. // Front Panel Audio: 1x HD Audio connector.
*Ethernet*	*Realtek® RTL8111H (1GbE).*

MSI B550M-A PRO Micro-ATX Motherboard — AM4, 64GB DDR4, PCIe 4.0 x16, NVMe M.2, HDMI, DVI-D, 1Gb LAN

Product Description