The ASRock B550 Phantom Gaming 4/ac is a feature-rich ATX motherboard designed for AMD Ryzen 5000, 4000 G-Series, and 3000 Series processors (Socket AM4, BIOS update may be required for some models). It features a solid 8-phase power design with DrMOS and enlarged heatsinks for stable performance and moderate overclocking.
It supports dual-channel DDR4 memory up to 128 GB across four DIMM slots with speeds reaching 4733+ MHz (OC) via A-XMP. Expansion includes one PCIe 4.0 x16 slot with steel reinforcement, one PCIe 3.0 x16 (x4 mode), three PCIe 3.0 x1 slots, one M.2 PCIe 4.0 x4 slot with heatsink, one M.2 Wi-Fi slot, and six SATA 6Gb/s ports with RAID 0/1/5/10 support.
Connectivity is enhanced with integrated Wi-Fi 5 (802.11ac) + Bluetooth 4.2, Realtek RTL8111H Gigabit LAN, Realtek ALC1200 7.1-channel HD audio with Nahimic enhancements, HDMI 2.1, DisplayPort 1.4, USB 3.2 Gen1 Type-C (rear and front header), and two Polychrome RGB headers. Additional conveniences include a pre-installed I/O shield and BIOS FlashBack button, making the B550 Phantom Gaming 4/ac an excellent value choice for mid-range Ryzen gaming builds with built-in wireless capability.