ASUS Prime B550-Plus DDR4 AMD Motherboard

The ASUS Prime B550-Plus is an ATX-form-factor motherboard built on the AMD B550 chipset, designed to pair with AMD AM4 socket processors including the Ryzen 5000 Series, Ryzen 4000 G-Series, and Ryzen 3000 Series desktop processors. It provides a reliable and feature-complete platform for PC builders who want modern connectivity and solid thermal management without straying from a proven architecture. Connectivity is a strong suit of the Prime B550-Plus. The board delivers PCIe 4.0 bandwidth on the primary x16 slot, letting compatible Ryzen 5000 processors fully exploit a modern discrete GPU or NVMe SSD. Two M.2 slots expand storage options, while six SATA 6Gb/s ports accommodate traditional drives. On the rear panel, you get two USB 3.2 Gen 2 ports — one Type-A and one Type-C — alongside four USB 3.2 Gen 1 Type-A ports and two USB 2.0 ports. Additional internal headers add six more front-panel USB connections. Networking is handled by the Realtek RTL8111H controller delivering Gigabit Ethernet, complemented by ASUS LANGuard protection. Memory support spans four DDR4 DIMM slots in a dual-channel configuration, accommodating up to 128 GB of RAM. Native speeds start at DDR4-2133 and extend to DDR4-3200, with overclocked profiles reaching DDR4-4800 (O.C.) for tuned builds. Display output on the I/O panel includes one DisplayPort and one HDMI port for systems using a Ryzen G-Series APU, though no onboard video chipset is present for discrete-GPU-only configurations. Thermal design includes VRM heatsinks, a PCH heatsink, and multiple hybrid fan headers controllable through ASUS Fan Xpert 4. Audio is delivered by a Realtek ALC887 7.1-channel HD Audio codec with audio shielding and an optical S/PDIF output. RGB enthusiasts benefit from an onboard Addressable Gen 2 header compatible with Aura Sync, enabling per-LED control of connected ARGB strips and backward compatibility with earlier Aura RGB devices. The ASUS UEFI BIOS rounds out the feature set with an accessible interface for both newcomers and experienced builders. Verified Specifications: - Chipset: AMD B550 - CPU Socket: AM4 (Ryzen 5000 / 4000 G-Series / 3000 Series) - Form Factor: ATX (12 in × 9.6 in / 30.5 cm × 24.4 cm) - Memory: 4 × DDR4 DIMM, dual-channel, up to 128 GB; DDR4-2133 to DDR4-3200 native, up to DDR4-4800 (O.C.) - PCIe Slots: 1 × PCIe 4.0 x16, 1 × PCIe 3.0 x16 (x16 mode), 1 × PCIe 3.0 x16 (x4 mode), 3 × PCIe 3.0 x1 - Storage: 2 × M.2, 6 × SATA 6Gb/s - Rear USB: 2 × USB 3.2 Gen 2 (1 × Type-A + 1 × Type-C), 4 × USB 3.2 Gen 1 Type-A, 2 × USB 2.0 - Video Out: 1 × DisplayPort, 1 × HDMI - Audio: Realtek ALC887, 7.1-channel HD, 5 × audio jacks, 1 × Optical S/PDIF out - LAN: Realtek RTL8111H, Gigabit Ethernet - RGB: Addressable Gen 2 header (Aura Sync) - Power: 1 × 24-pin EATX