ASRock B550M Pro4 AMD Motherboard Overview

The ASRock B550M Pro4 delivers reliable performance for AMD Ryzen processors in a compact Micro-ATX form factor. Built on the AMD B550 chipset, this motherboard supports 3rd Gen AMD Ryzen CPUs and future processors, offering PCIe 4.0 connectivity and robust power delivery for gaming and productivity builds.

Power Delivery and Performance

Featuring an 8-phase Digi Power design with premium 50A power chokes, the B550M Pro4 provides stable power delivery to your CPU. The 2oz copper PCB construction ensures efficient heat dissipation and supports DDR4 memory up to 4733MHz (OC), with four DIMM slots accommodating up to 128GB of system memory. This configuration handles demanding workloads and overclocking scenarios effectively.

Expansion and Storage Options

The motherboard includes one PCIe 4.0 x16 slot for high-performance graphics cards, plus additional PCIe 3.0 slots for expansion cards. Storage flexibility comes from two M.2 sockets: a Hyper M.2 slot supporting PCIe Gen4 x4 (64 Gb/s) and a secondary M.2 slot supporting both PCIe Gen3 x2 and SATA3. Six SATA3 ports with RAID support provide additional storage connectivity. AMD CrossFireX support enables multi-GPU configurations.

Connectivity and I/O

Rear I/O includes USB 3.2 Gen2 Type-A and Type-C ports (10 Gb/s), four USB 3.2 Gen1 ports, and two USB 2.0 ports with ESD protection. Display outputs feature HDMI 2.1, DisplayPort 1.4, and D-Sub for triple monitor support with integrated Radeon Vega graphics (APU required). Realtek Gigabit LAN with Wake-On-LAN support handles network connectivity.

Audio and Additional Features

The Realtek ALC1200 audio codec delivers 7.1 channel HD audio with Nahimic Audio enhancement, PCB isolate shielding, and individual layers for left/right audio channels. ASRock's Full Spike Protection safeguards all USB, audio, and LAN ports. The motherboard includes RGB LED headers, multiple fan headers with smart speed control, and ASRock's POST Status Checker for troubleshooting.

Build Quality and Compatibility

ASRock Super Alloy construction features an XXL aluminum heatsink, high-density glass fabric PCB, and sapphire black PCB design. The Steel Slot Gen4 reinforces the primary PCIe slot, while the full coverage M.2 heatsink keeps NVMe drives cool. Compatible with Windows 10 64-bit and featuring FCC/CE certifications with ErP/EuP ready support.

• Socket: AM4
• CPU Compatibility: AMD Ryzen
• Chipset: AMD B550
• Form Factor: Micro ATX
• Memory Slots: DDR4 - 4 Slots
• M.2 Compatibility: NVMe / SATA
• USB C: Yes