ASUS Prime B650M-A II DDR5 AMD Motherboard

The ASUS Prime B650M-A II is a Micro-ATX motherboard built on the AMD B650 chipset, designed to pair with AMD Ryzen 7000 series desktop processors via the AM5 socket. It brings a capable feature set to compact system builders who want DDR5 speed, PCIe 5.0 storage, and a stable power delivery foundation without stepping up to a larger form factor. Memory support is a highlight: four DIMM slots accommodate up to 192GB of DDR5 RAM with native speeds of 4800 MT/s and overclocked profiles reaching DDR5-7600+ via AMD EXPO tuning. The board's OptiMem II trace layout is designed to preserve signal integrity at elevated frequencies, and both ECC and non-ECC unbuffered modules are supported, with non-ECC DDR5 modules benefiting from die ECC functionality. Storage options are equally forward-looking. The primary M.2 slot (M.2_1) runs at PCIe 5.0 x4, delivering the bandwidth headroom needed for next-generation NVMe drives, while the secondary M.2 slot operates at PCIe 4.0 x4. Four SATA 6Gb/s ports round out mass-storage connectivity for additional drives or SSDs. The rear I/O panel offers three display outputs — DisplayPort 1.4 (up to 8K@60Hz), HDMI 2.1 (up to 4K@60Hz), and a legacy VGA port — for systems using AMD's integrated graphics. Networking is handled by a Realtek 2.5Gb Ethernet controller. Eight rear USB ports span USB 3.2 Gen 2 (10Gbps), USB 3.2 Gen 1 (5Gbps), and USB 2.0, with seven additional front-panel ports including a USB Type-C header. Audio is delivered through a Realtek 7.1 surround HD Audio codec supporting 24-bit/192kHz playback, with audio shielding, premium capacitors, and dedicated PCB layers to reduce interference. ASUS 5X Protection III features — including DIGI+ VRM, LANGuard, Overvoltage Protection, Safeslot Core+, and a stainless-steel back I/O — add longevity and reliability to the design. A BIOS FlashBack button enables firmware updates without a CPU or RAM installed, simplifying platform upgrades. RGB enthusiasts are served by one Aura RGB header and three Addressable Gen 2 headers, all manageable via Armoury Crate software. Fan management runs through five 4-pin hybrid headers (one CPU, one CPU OPT, three chassis). Key Specifications: - Form Factor: mATX, 9.6 x 9.6 in (24.4 x 24.4 cm) - CPU Socket: AMD AM5 (Ryzen 7000 series) - Chipset: AMD B650 - Memory: 4 x DIMM, max 192GB, DDR5-4800 to DDR5-7600+(OC), Dual Channel, EXPO support - Storage: M.2_1 PCIe 5.0 x4; M.2_2 PCIe 4.0 x4; 4 x SATA 6Gb/s - Expansion: 1 x PCIe 4.0 x16 (CPU, x16 mode); 2 x PCIe 4.0 x16 slots (chipset, x1 mode) - Ethernet: Realtek 2.5Gb - Audio: Realtek 7.1 HD, 24-bit/192kHz - Display Out: 1 x DisplayPort 1.4, 1 x HDMI 2.1, 1 x VGA - Rear USB: 2 x USB 3.2 Gen 2, 2 x USB 3.2 Gen 1, 4 x USB 2.0 - BIOS: 256Mb Flash ROM, UEFI AMI - OS Support: Windows 11 / Windows 10 64-bit - Warranty: 3 Years