The AMD B550 Motherboard Overview: ASUS, GIGABYTE, MSI, ASRock, and Othersby Dr. Ian Cutress & Gavin Bonshor on June 16, 2020 11:00 AM EST
ASRock B550 Pro4
The B550 Pro4 is a more cost-down version of the Extreme4, where we replace features like the 2.5 gigabit Ethernet with single gigabit Ethernet, as well as reduce the number of power phases and such. Because Pro4 is a different line to Extreme4, there’s also a major overhaul in the styling.
In this instance the power delivery is all situated on the left hand side, with a single heatsink and a shortened rear panel cover that doesn’t cover all the rear panel segments. The socket area is a little busy, with ASRock going for a mix of angles here, so it’s hard to make out but there are three 4-pin headers around the socket, while the CPU is powered by an 8-pin and a 4-pin.
The DRAM slots are still single sided latch designs, and on the right hand side of the board we get an RGB header, the 24-pin ATX connector, a USB 3.0 header, and six SATA ports. Underneath the SATA ports are some built in RGB LEDs.
Unlike some of the other ASRock boards, because Pro4 is a more cost down model, the chipset heatsink is smaller than most. There is an M.2 heatsink, but it’s not attached to the chipset heatsink and sits on its own, but covers the PCIe 4.0 x4 slot from the CPU. There is another M.2 slot below the chipset heatsink, and this is a PCIe 3.0 x2 slot from the chipset. For the PCIe slots, the top slot is a reinforced PCIe 4.0 x16 slot, while the second full-length slot is a PCIe 3.0 x4 from the chipset.
For the rear panel, we get a combination PS/2 port, four USB 3.2 Gen 1 ports, an analog D-Sub port, a HDMI port, space for Wi-Fi antenna, a Type-A USB 3.2 Gen 2 port, a Type-C USB 3.2 Gen 2 port, gigabit Ethernet via a Realtek RTL8111H controller, and audio jacks from a Realtek ALC1200 design.