ASROCK B550M-ITX/Ac DDR4 AMD Motherboard

The ASRock B550M-ITX/AC is a compact Mini-ITX motherboard built on the AMD B550 chipset, designed for builders who want a full-featured AMD Ryzen platform without sacrificing space. Measuring just 17.0 cm × 17.0 cm (6.7 in × 6.7 in), it fits standard Mini-ITX cases while delivering performance typically associated with larger form factors. At its core, the board supports AMD AM4 socket processors across a wide range of Ryzen generations — including Ryzen 3000, 3000 G-Series, 4000 G-Series, 5000, and 5000 G-Series desktop processors (excluding Ryzen 5 3400G and Ryzen 3 3200G). The power delivery system features an 8-phase Digi Power design with Premium 60A power chokes and 50A Dr.MOS components, grouped under ASRock's Super Alloy platform for thermal stability. Memory support spans two DDR4 DIMM slots capable of holding up to 64 GB of dual-channel DDR4 RAM. Speeds reach DDR4 4733+ (OC) with Renoir APUs and DDR4 4600+ (OC) with Matisse CPUs, with XMP profile support included. The single PCIe 4.0 x16 slot (when paired with Matisse CPUs) accommodates discrete graphics cards, while a Hyper M.2 slot supports PCIe Gen4 x4 NVMe drives at up to 64 Gb/s alongside four SATA3 6.0 Gb/s connectors with RAID 0/1/10 support. Connectivity is a standout strength for its form factor. Built-in Intel 802.11ac Wi-Fi with dual-band (2.4/5 GHz) support reaches up to 433 Mbps, paired with Bluetooth 4.2. Wired networking is handled by a Realtek RTL8111H Gigabit LAN controller. Display output includes HDMI 2.1 (up to 4K@60Hz) and DisplayPort 1.4 (up to 5K@120Hz) for APU-based configurations. USB connectivity includes six USB 3.2 Gen1 ports — three Type-A and one Type-C on the rear panel, plus two via a front-panel header — alongside two USB 2.0 rear ports and a USB 2.0 internal header. Audio is handled by the Realtek ALC887 codec delivering 7.1-channel HD audio with surge protection. RGB and ARGB headers (one each) enable lighting customization via ASRock Polychrome SYNC. Verified Specifications: - Form Factor: Mini-ITX, 17.0 × 17.0 cm - Chipset: AMD B550 - Socket: AM4 (Ryzen 3000/4000G/5000/5000G series) - Memory: 2× DDR4 DIMM, max 64 GB, up to DDR4 4733+ (OC) - Expansion: 1× PCIe 4.0 x16 (Matisse) / PCIe 3.0 x16 (Renoir) - Storage: 4× SATA3, 1× M.2 (PCIe Gen4 x4 / SATA3) - Audio: Realtek ALC887, 7.1 CH HD - LAN: Realtek RTL8111H, 1 Gbps - Wireless: Intel 802.11ac (a/b/g/n/ac), BT 4.2 - USB: 6× USB 3.2 Gen1, 4× USB 2.0 - Display Out: HDMI 2.1, DisplayPort 1.4 - BIOS: 256 Mb AMI UEFI - Certifications: FCC, CE, ErP/EuP ready