ASRock B550M Steel Legend AM4 M-ATX Motherboard

Experience robust durability and uncompromised performance with the ASRock B550M Steel Legend AM4 M-ATX Motherboard, designed to meet the demands of modern users, mainstream gamers, and PC enthusiasts. With its stunning aesthetics and military-grade components, the Steel Legend series blends reliability with style, backed by 2oz copper PCB layers and advanced thermal regulation for long-lasting system stability.

The B550M Steel Legend supports AMD Ryzen™ 3000, 4000 G-Series, and 5000 Series processors on the AM4 socket, unlocking incredible performance potential and support for DDR4 memory speeds up to 4733+ MHz (OC). A reinforced PCIe 4.0 x16 slot and multiple high-speed M.2 slots ensure blazing-fast storage and graphics performance. For creators and gamers alike, AMD Smart Access Memory expands data channels between CPU and GPU, minimizing latency and maximizing throughput. Complementing the raw power is Nahimic Audio Technology, delivering immersive 7.1-channel HD sound with spatial sound tracking, perfect for competitive gaming and content consumption.

Built for connectivity and control, this motherboard features dual USB 3.2 Gen2 ports (Type-A and Type-C), high-speed 2.5G Dragon LAN, and Polychrome RGB Sync support, allowing synchronized lighting with compatible RGB components. Whether you’re connecting multiple RGB strips or controlling fan speeds via Smart Fan technology, the B550M Steel Legend gives you full customization over your system. Backed by AMD StoreMI technology, it smartly combines SSD speed with HDD capacity for efficient and seamless storage performance.

FEATURES:

• Supports AMD AM4 Socket Ryzen™ 3000, 3000 G-Series, 4000 G-Series, 5000 and 5000 G-Series Desktop Processors
• Supports DDR4 4733+ (OC)
• 1 x PCIe 4.0 x16, 1 x PCIe 3.0 x16, 1 x PCIe 3.0 x1, 1 x M.2 Key E for Wi-Fi
• Graphics Output Options: HDMI, DisplayPort
• 7.1 CH HD Audio (Realtek ALC1220/ALC1200 Audio Codec), Nahimic Audio
• 6 x SATA3, 1 x Hyper M.2 (PCIe Gen4x4), 1 x M.2 (PCIe Gen3x2 & SATA3)
• 2 x USB 3.2 Gen2 (Rear Type A+C), 8 x USB 3.2 Gen1 (4 Front, 4 Rear)
• Dragon 2.5G LAN
• AMD CrossFireX™ support

SPECIFICATIONS:

• Form Factor: Micro ATX (24.4 cm x 22.4 cm)
• Socket: AMD AM4
• Compatible CPUs: Ryzen™ 3000, 3000 G-Series, 4000 G-Series, 5000 and 5000 G-Series
• Chipset: AMD B550
• Memory:
  • 4 x DDR4 DIMMs, up to 128GB
  • support DDR4 4533+(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133
  • ECC & non-ECC
  • Un-buffered memory
  • Supports Intel XMP
• Storage:
  • 6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug
  • 1 x Hyper M.2 Socket (M2_1), supports M Key type 2280 M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Vermeer, Matisse) or Gen3x4 (32 Gb/s) (with Cezanne, Renoir and Picasso)
  • 1 x M.2 Socket (M2_2), supports M Key type 2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16Gb/s)
• Graphics Output:
  • Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU
  • 1 x HDMI 2.1 (4K@60Hz)
  • 1 x DisplayPort 1.4 (5K@120Hz)
• Networking:
  • 2.5 Gigabit LAN 10/100/1000/2500Mb/s
  • Dragon RTL8125BG
• Audio:
  • Codec: Realtek ALC1220/ALC1200 Audio Codec
  • Features: Premium Blu-ray Audio support, Supports Surge Protection, PCB Isolate Shielding, Individual PCB Layers for R/L Audio Channel, Gold Audio Jacks, Nahimic Audio
• Slots:
  • AMD Ryzen series CPUs (Vermeer and Matisse)
  • 2 x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE3: Gen3 x4 mode)
  • AMD Ryzen series APUs (Cezanne and Renoir)
  • 2 x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE3: Gen3 x4 mode)
  • AMD Ryzen series APUs (Picasso)
  • 2 x PCI Express x16 Slots (PCIE1: Gen3x8 mode; PCIE3: Gen3 x4 mode)
  • 1 x PCI Express 3.0 x1 Slot
  • Supports AMD Quad CrossFireX™ and CrossFireX™
  • 15μ Gold Contact in VGA PCIe Slot (PCIE1)
  • 1 x M.2 Socket (Key E), supports type 2230 Wi-Fi/BT PCIe Wi-Fi module
• Rear Panel I/O:
  • 2 x Antenna Mounting Points
  • 1 x PS/2 Mouse/Keyboard Port
  • 1 x HDMI Port
  • 1 x DisplayPort 1.4
  • 1 x Optical SPDIF Out Port
  • 1 x USB 3.2 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection)
  • 1 x USB 3.2 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection)
  • 4 x USB 3.2 Gen1 Ports (ASMedia ASM1074 hub) (Supports ESD Protection)
  • 2 x USB 2.0 Ports (Supports ESD Protection)
  • 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
  • 1 x Clear CMOS Button
  • HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
• Connector:
  • 1 x SPI TPM Header
  • 1 x Power LED and Speaker Header
  • 2 x RGB LED Headers
  • 2 x Addressable LED Headers
  • 1 x CPU Fan Connector (4-pin)
  • 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)
  • 4 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)
  • 1 x 24 pin ATX Power Connector (Hi-Density Power Connector)
  • 1 x 8 pin 12V Power Connector (Hi-Density Power Connector)
  • 1 x 4 pin 12V Power Connector (Hi-Density Power Connector)
  • 1 x Front Panel Audio Connector
  • 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
  • 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports) (Supports ESD Protection)
• OS: Microsoft Windows® 10 64-bit / 11 64-bit
• Certifications: FCC, CE & ErP/EuP ready (ErP/EuP ready power supply is required)

WHAT’S IN THE BOX:

• ASRock B550M Steel Legend AM4 M-ATX Motherboard – Black x1
• SATA Data Cables x 2
• Screws for M.2 Sockets x 2