The product's shade and actual color may differ from what is shown in the picture, as the images are for illustrative purposes. The product description is general and may not include all the product's features.
Asrock B550 Pro4 AMD B550 Socket AM4 ATX
1020382 90-MXBCZ0-A0UAYZ
4710483931482
2026-07-21
XXL Aluminum Alloy Heatsink
Extra large aluminum alloy heat sinks that effectively take away heat from the MOSFET and chipset so that your whole system may perform more stable.
Sapphire Black PCB
Pure black PCB appearance. The new Sapphire Black PCB represents rock-solid quality and gives the motherboard a more mysterious touch.
High Density Glass Fabric PCB
High Density Glass Fabric PCB design that reduces the gaps between the PCB layers to protect the motherboard against electrical shorts caused by humidity.
Processor | |
| Compatible processor series | AMD Ryzen 3000 Series |
| Maximum number of SMP processors | 1 |
| Processor socket | Socket AM4 |
| Supported processor sockets | Socket AM4 |
| Processor manufacturer | AMD |
Memory | |
| Maximum internal memory | 128 GB |
| Supported memory clock speeds | 2133, 2400, 2667, 2933, 3200, 3466, 3600, 3866, 4000, 4133, 4400, 3733, 3800, 4266, 4333, 4466, 4200, 4533 |
| Supported memory types | DDR4-SDRAM |
| Memory channels | Dual-channel |
| Supported memory module capacities | 4GB, 8GB, 16GB, 32GB |
| Memory slots type | DIMM |
| Unbuffered memory | Yes |
| Number of memory slots | 4 |
| Supported memory clock speed (max) | 4533 MHz |
| ECC сompatibility | ECC & Non-ECC |
Storage controllers | |
| RAID levels | 0, 1, 10 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, SATA III |
| RAID support | Yes |
Graphics | |
| Parallel processing technology support | Quad-GPU CrossFireX, CrossFireX |
| HDCP | Yes |
| DirectX version | 12.0 |
Internal I/O | |
| USB 2.0 connectors | 2 |
| CPU fan connector | Yes |
| Number of COM connectors | 1 |
| ATX Power connector (24-pin) | Yes |
| Number of chassis fan connectors | 4 |
| Front panel audio connector | Yes |
| TPM connector | Yes |
| Peripheral (Molex) power connectors (4-pin) | 1 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 1 |
| Number of SATA III connectors | 6 |
| EPS power connector (8-pin) | Yes |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors | 0 |
| Front panel connector | Yes |
| 12V power connector | Yes |
| RGB LED pin header | Yes |
Rear panel I/O ports | |
| PS/2 ports quantity | 1 |
| USB 2.0 ports quantity | 0 |
| Ethernet LAN (RJ-45) ports | 1 |
| Microphone in | Yes |
| VGA (D-Sub) ports quantity | 1 |
| DVI-D ports quantity | 0 |
| HDMI ports quantity | 1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity | 0 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
Network | |
| LAN controller | Realtek RTL8111H |
| Wake-on-LAN ready | Yes |
| Ethernet interface type | Gigabit Ethernet |
| Ethernet LAN | Yes |
| Wi-Fi | No |
Features | |
| Motherboard form factor | ATX |
| Motherboard chipset | AMD B550 |
| Audio output channels | 7.1 channels |
| Motherboard chipset family | AMD |
| PC health monitoring | CPU, Fan, Temperature, Voltage, Water cooling |
| Component for | PC |
| Audio chip | Realtek ALC1200 |
Expansion slots | |
| PCI Express x1 (Gen 3.x) slots | 2 |
| PCI Express x16 (Gen 3.x) slots | 1 |
| Number of M.2 (M) slots | 2 |
| PCI Express x16 (Gen 4.x) slots | 1 |
BIOS | |
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| ACPI version | 5.1 |
| System Management BIOS (SMBIOS) version | 2.3 |
Weight & dimensions | |
| Width | 305 mm |
| Depth | 244 mm |
| Height | 87 mm |
Other features | |
| Weight | 465 g |
Packaging content | |
| Cables included | SATA |
| Drivers included | Yes |
Logistics data | |
| Harmonized System (HS) code | 84733020 |