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ASRock B550M Pro SE AM4 DDR4 SATA 6Gb/s 1 PCIe 4.0 x16 Micro ATX Motherboard - B550 STEEL LEGEND

ASRock B550M Pro SE AM4 DDR4 SATA 6Gb/s 1 PCIe 4.0 x16 Micro ATX Motherboard – B550 STEEL LEGEND

(0 customer reviews) SKU: 13-157-937
$140.99
In Stock

10 in stock

ASRock B550M Pro SE Steel Legend Micro ATX motherboard with AMD B550 chipset, AM4 socket, DDR4 support, PCIe 4.0, and comprehensive connectivity for Ryzen desktop PCs.

  • Tool-free installation with slide-and-lock design
  • USB 3.0 with 5Gbps transfer speed and UASP acceleration
  • Compatible with 7mm and 9.5mm 2.5" SATA HDD/SSD
  • Aluminum housing with effective heat dissipation
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SKU: 13-157-937

Description

The ASRock B550M Pro SE AM4 DDR4 SATA 6Gb/s Micro ATX Motherboard from the Steel Legend series is designed for AMD Ryzen processors, supporting the AM4 socket. It features the advanced AMD B550 chipset, providing robust connectivity with support for PCIe 4.0 x16, DDR4 memory (up to 128GB), multiple SATA 6Gb/s ports, and dual M.2 slots for high-speed NVMe SSDs. The Micro ATX form factor makes it ideal for compact builds, while premium components and reinforced slots ensure durability and stability for gaming and professional workloads. Onboard features include Gigabit Ethernet, 7.1 channel HD audio, and multiple USB ports for versatile expansion.

Additional information

Brand

ASRock
Model

B550M PRO SE
Series

Steel Legend
Form Factor

Micro ATX (244mm x 244mm)
Chipset

AMD B550
CPU Socket

AM4
Supported CPUs

AMD Ryzen (3rd Gen and newer, AM4)
SATA

6Gb/s
Memory Slots

4 x DDR4 DIMM
Supported Processors

AMD Ryzen 3000, 4000G, 5000 Series
Memory Type

DDR4
Memory Support

4 x DDR4 DIMM, up to 128GB, 4733+ (OC) MHz
Max Memory

128GB
PCI Express

1 x PCIe 4.0 x16, 1 x PCIe 3.0 x1
PCIe Slots

1 x PCIe 4.0 x16, 1 x PCIe 3.0 x1
SATA Ports

4 x SATA 6Gb/s
PCIe Version

PCIe 4.0 x16
M.2 Slots

2 x M.2 (NVMe/SATA)
LAN

1 x Gigabit Ethernet (Realtek RTL8111H)
Audio

7.1 Channel HD Audio (Realtek ALC897)
USB Ports

Rear: 4 x USB 3.2 Gen1, 2 x USB 2.0; Internal: Headers for additional USB
Graphics Output

1 x HDMI, 1 x DisplayPort (dependent on CPU with integrated graphics)
Expansion Slots

2 (1 x PCIe 4.0 x16, 1 x PCIe 3.0 x1)
Power Delivery

6+2 Phase
Cooling

Multiple fan headers, VRM heatsink
Onboard Audio Chip

Realtek ALC897 (typical for this series)
RGB Support

Addressable RGB, Polychrome SYNC
Power Phases

6+2 Phase (typical for B550 Steel Legend)
Reinforced PCIe Slot

Yes
RGB / Lighting

Polychrome SYNC (addressable RGB header)
Operating System

Windows 10/11
Reinforced Slots

Yes (Steel Slot)
Operating System Support

Windows 10/11

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Frequently Asked Questions

  • This product comes with a standard 2-year manufacturer warranty that covers any defects in materials and workmanship.
  • Please check the detailed specifications to ensure compatibility with your system. If you're unsure, our customer support team can help you determine compatibility.
  • Yes, we offer professional installation services for an additional fee. Please contact our support team to arrange for installation.

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