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.

ASRock B550 Extreme4 ASRock B550M Pro4
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  • Lucky Stripes 99 - Sunday, June 21, 2020 - link

    Same here. Both DVI and DP can be converted to VGA using an inexpensive passive dongle. I'd much rather see either of those ports over VGA.
  • Gigaplex - Saturday, August 1, 2020 - link

    DVI-I can be converted easily. DVI-D (which most of the modern boards have) need a more complex adapter.
  • iranterres - Thursday, June 18, 2020 - link

    Why so expensive...
  • cybersirf - Friday, June 19, 2020 - link

    more expensive, less features. what happened to x2 slots?
  • miss5tability - Saturday, June 20, 2020 - link

    whata abiut VRM the biggest issue on b450 MOBOs, i dont see any single word about that ? wtf
  • Mem - Saturday, June 20, 2020 - link

    I believe you will find Asus use S1220A so not S1200A , it's custom version of ALC1220, when you go by Asus website for their B550 boards.
  • awonglk - Saturday, June 20, 2020 - link

    There seems to be no mentions of Thunderbolt 3 header that apparently comes with this motherboard according to Asia’s own website:
    https://edgeup.asus.com/2020/b550-motherboard-guid...

    Does anyone know how or what this connects to on a mITX motherboard?
  • blakflag - Monday, June 22, 2020 - link

    Does "USB 3.2 G2 Type-C" imply Thunderbolt 3 support?
  • dennphill - Friday, June 26, 2020 - link

    And here it is a couple of weeks after the 'release' and there are no boards (well, no mATX versions) to buy...unless you want to deal with the scalpers on NewEgg asking $25 to 35 over the regular price - oh, and BTW, they will ship/deliver in mid-July - AND I see no reviews or comparisons other than manufacturers' sites advertising for the B550 boards. The few articles I see are all based on the pre-release data and not from actual delivered, installed and tested MBs. Poor AMD hardware release, as far as I am concerned.
  • dennphill - Friday, June 26, 2020 - link

    Oh, and the listing is incomplete with a couple of manufacturer-advertised versions od mATX boards not listed in this article.

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