ASRock B450M/AC R2.0 AM4 AMD Promontory B450 Micro ATX AMD Motherboard

The ASRock B450M/AC R2.0 is a compact Micro ATX motherboard designed for AMD AM4 socket Ryzen processors (5000, 4000 G-Series, 3000, 2000, and 1000 Series with BIOS update). Built on the AMD B450 chipset, it features a reliable 6-phase power design with 4+2 DrMOS configuration and supports dual-channel DDR4 memory up to 128GB across two DIMM slots at speeds reaching 4133+ MHz (OC).

Expansion includes one full-speed PCIe 3.0 x16 slot with steel reinforcement, one PCIe 2.0 x16 (x4 mode), one PCIe 2.0 x1 slot, one M.2 slot (PCIe 3.0 x4 / SATA3), and four SATA 6Gb/s ports with RAID 0/1/5/10 support. Integrated connectivity provides built-in Wi-Fi 6 (802.11ac) + Bluetooth 5.1, Realtek RTL8111H Gigabit LAN, Realtek ALC887 7.1-channel HD audio, USB 3.2 Gen1 Type-C and Type-A ports, HDMI 1.4, DisplayPort 1.2, and two RGB headers with Polychrome RGB Sync support.



User-friendly features include a pre-installed I/O shield, BIOS Flashback capability, and ASRock’s Full Spike Protection, making the B450M/AC R2.0 a versatile, budget-friendly choice for compact Ryzen gaming and productivity builds with modern wireless convenience.