ASRock B550M Pro4 — AMD B550 Micro-ATX Motherboard (Socket AM4)

Description

The ASRock B550M Pro4 is a Micro-ATX motherboard for AMD Ryzen processors on Socket AM4, powered by the AMD B550 chipset. It supports up to 128 GB DDR4 memory across 4 DIMM slots (ECC & Non-ECC) at speeds up to DDR4-4733+ (OC), with dual-channel architecture. Storage options include 6× SATA III ports, 1× Hyper M.2 (PCIe Gen4 x4 / NVMe), and 1× M.2 (PCIe Gen3 x2 / SATA3). Graphics outputs: D-Sub, HDMI 2.1, and DisplayPort 1.4 supporting up to 5120×2880 @ 3 displays. Connectivity: Realtek Gigabit LAN, 2× USB 3.2 Gen2 (Type-A + Type-C rear), 4× USB 3.2 Gen1 rear, 2× USB 2.0 rear, 1× PS/2. Audio: Realtek ALC1200 7.1-channel HD Audio with Nahimic. Expansion: 1× PCIe 4.0 x16, 1× PCIe 3.0 x16, 1× PCIe 3.0 x1 — supports AMD CrossFireX. Features 8-phase digital power design, 50A power chokes, 2oz copper PCB, Polychrome RGB headers (ARGB + RGB), M.2 Key E for optional Wi-Fi, and Post Status Checker LEDs. BIOS: UEFI AMI 256 Mb. Form factor: Micro-ATX 244×244 mm. Certifications: FCC, CE, ErP/EuP.