Key Specifications
Choose one or multiple features to search for items that have the same specifications.| Processor | |
| Processor manufacturer | AMD |
| Maximum number of SMP processors | 1 |
| Compatible processor series | AMD Ryzen 3000 Series |
| Processor socket | AM4 |
| Supported processor sockets | Socket AM4 |
| Memory | |
| Maximum internal memory | 128 GB |
| ECC | ![]() |
| Non-ECC | ![]() |
| Supported memory clock speeds | 2133,2400,2667,2933,3200,3333,3466,3600,3733,3800,3866,4000,4133,4200,4266,4333,4400,4466,4533 MHz |
| Supported memory types | DDR4 |
| Memory channels | Dual-channel |
| Unbuffered memory | ![]() |
| Memory slots type | DIMM |
| Supported memory module capacities | 4GB, 8GB, 16GB, 32GB |
| Number of memory slots | 4 |
| Supported memory clock speed (max) | 4533 MHz |
| ECC сompatibility | ECC & Non-ECC |
| Weight & dimensions | |
| Height | 70 mm |
| Width | 244 mm |
| Depth | 244 mm |
| Networking | |
| Ethernet LAN | ![]() |
| Bluetooth | ![]() |
| Wake-on-LAN ready | ![]() |
| LAN controller | Dragon RTL8125BG |
| Wi-Fi | ![]() |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Internal I/O | |
| USB 2.0 connectors | 2 |
| CPU fan connector | ![]() |
| ATX Power connector (24-pin) | ![]() |
| Number of EATX power connectors | 1 |
| Number of chassis fan connectors | 4 |
| Front panel audio connector | ![]() |
| TPM connector | ![]() |
| Peripheral (Molex) power connectors (4-pin) | 2 |
| EPS power connector (8-pin) | ![]() |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA III connectors | 6 |
| Front panel connector | ![]() |
| 12V power connector | ![]() |
| RGB LED pin header | ![]() |
| Back panel I/O ports | |
| PS/2 ports quantity | 1 |
| USB 2.0 ports quantity | 2 |
| Ethernet LAN (RJ-45) ports | 1 |
| Microphone in | ![]() |
| S/PDIF out port | ![]() |
| WiFi-AP antenna jack | 2 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| DisplayPorts quantity | 1 |
| DisplayPort version | 1.4 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| 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 |
| Storage controllers | |
| RAID levels | 0, 1, 10 |
| RAID support | ![]() |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, SATA III |
| Packaging content | |
| Cables included | SATA |
| Drivers included | ![]() |
| Expansion slots | |
| PCI Express x16 slots | 2 |
| PCI Express x1 slots | 1 |
| PCI Express x1 (Gen 3.x) slots | 1 |
| PCI Express x16 (Gen 3.x) slots | 1 |
| Number of M.2 (M) slots | 2 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| BIOS | |
| Plug and Play | ![]() |
| BIOS memory size | 256 Mbit |
| BIOS type | UEFI AMI |
| ACPI version | 5.1 |
| Clear CMOS button | ![]() |
| System Management BIOS (SMBIOS) version | 2.3 |
| Other features | |
| Weight | 465 g |
| Quick installation guide | ![]() |
| Number of M.2 (E) slots | 1 |
| Graphics | |
| Maximum resolution | 5120 x 2880 pixels |
| Parallel processing technology support | CrossFire |
| HDCP | ![]() |
| Number of displays supported | 2 |
| Features | |
| Motherboard chipset | AMD B550 |
| Motherboard form factor | Micro ATX |
| Product colour | Black, White |
| Audio output channels | 7.1 channels |
| PC health monitoring | CPU, Fan, Temperature, Voltage, Water cooling |
| Windows operating systems supported | Windows 10 x64, Windows 11 x64 |
| Power source type | ATX |
| Motherboard chipset family | AMD |
| Component for | PC |
| Audio chip | Realtek ALC1200 |
| Logistics data | |
| Harmonized System (HS) code | 84733020 |
| EAN | 4710483931505 |
| Warranty | 1 year |
The ASRock B550M Steel Legend is a Micro ATX motherboard engineered for the AMD AM4 socket, providing support for AMD Ryzen 3000 series processors. Built on the B550 chipset, this board is designed for compact PC builds that require a balance of features and performance. It supports up to 128 GB of dual-channel DDR4 memory with overclocked speeds reaching 4733 MHz, accommodating memory-intensive applications. The board's construction incorporates ASRock's Super Alloy components, which are intended to enhance system stability and durability during operation.
For storage and expansion, the B550M Steel Legend is equipped with two M.2 slots for high-speed solid-state drives and six SATA III ports, with RAID 0, 1, and 10 support for data redundancy or performance. The primary graphics card slot is a PCI Express 4.0 x16 interface, providing maximum bandwidth for compatible GPUs. Connectivity includes a 2.5 Gigabit Ethernet port for high-speed network access, and the rear I/O panel features a comprehensive selection of USB ports, including USB 3.2 Gen 2 Type-A and Type-C. Onboard audio is managed by the Realtek ALC1200 codec, and video output is available through HDMI 2.1 and DisplayPort 1.4 ports.
Key Features:- AMD AM4 socket and B550 chipset
- Micro ATX form factor for compact systems
- Four DIMM slots support up to 128 GB DDR4 memory
- Dual M.2 slots and six SATA III ports for storage
- One PCIe 4.0 x16 slot for modern graphics cards
- Integrated 2.5 Gigabit Ethernet controller
- Rear panel includes USB 3.2 Gen 2 Type-A and Type-C
- Features HDMI 2.1 and DisplayPort 1.4 video outputs
- Realtek ALC1200 audio codec
- Supports chassis cooling with four fan connectors
- Includes an RGB LED pin header for system lighting
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- manual pdf (English)


