| 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). |
