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 | 2133,2400,2667,2933,3200,3466,3600,3733,3800,3866,4000,4133,4200,4266,4333,4400,4466,4533,4600,4666,4733 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) | 4733 MHz |
| ECC сompatibility | ECC & Non-ECC |
| Weight & dimensions | |
| Height | 70 mm |
| Width | 305 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 | 5 |
| Front panel audio connector | ![]() |
| TPM connector | ![]() |
| Peripheral (Molex) power connectors (4-pin) | 1 |
| EPS power connector (8-pin) | ![]() |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 1 |
| Number of SATA III connectors | 6 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors | 1 |
| 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 | 4 |
| 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 | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity | 1 |
| 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 | 2 |
| 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 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 |
| DirectX version | 12.0 |
| HDCP | ![]() |
| Number of displays supported | 2 |
| Features | |
| Motherboard chipset | AMD B550 |
| Motherboard form factor | 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 ALC1220 |
| Logistics data | |
| Harmonized System (HS) code | 84733020 |
| EAN | 4710483931574 |
| Warranty | 1 year |
The ASRock B550 Steel Legend is an ATX motherboard engineered for the AMD AM4 platform, providing a stable foundation for desktop systems. It is built on the B550 chipset, ensuring native support for AMD Ryzen 3000 series processors and access to the PCIe 4.0 standard. The board incorporates a multi-phase power delivery system to supply consistent voltage to the CPU, which is beneficial for system stability, particularly with multi-core processors under load. Its design prioritizes thermal management with heatsinks on critical components for sustained performance.
This motherboard presents extensive expansion and connectivity features for modern builds. It includes four dual-channel DDR4 DIMM slots, supporting up to 128 GB of memory with overclocked speeds reaching up to 4733 MHz. For storage, it is equipped with two M.2 slots, one of which operates on the PCIe 4.0 interface for high-speed NVMe drives, complemented by six SATA III ports. Onboard networking is handled by a 2.5GbE LAN controller for fast wired connections, while the audio system is powered by a Realtek ALC1220 codec.
Key Features:- ATX motherboard form factor
- AMD B550 chipset for AM4 socket processors
- Supports up to 128 GB of dual-channel DDR4 memory
- Features one PCIe 4.0 x16 slot for modern GPUs
- Includes two M.2 slots for high-speed SSDs
- Provides six SATA III 6.0 Gb/s connectors
- Equipped with a 2.5GbE LAN controller
- Onboard Realtek ALC1220 audio codec
- Offers rear USB 3.2 Gen 2 Type-A and Type-C ports
- Includes onboard headers for RGB lighting control
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- manual pdf (English)


