ASRock’s B550AM Gaming motherboard has been sighted, but rejoice ye not, as this board has a pair of caveats that make it less news worthy than I originally figured. Firstly, the B550A chipset is a rebrand of B450. Secondly, this board at the time of writing appears to be for OEM only markets.
So, with that out of the way, let’s look at some interesting features –
From TechPowerup;
“The AM4 socket is wired to four DDR4 DIMM slots supporting dual-channel DDR4 memory; the board’s sole PCI-Express 4.0 x16, and an M.2-22110 slot that has PCIe 3.0 x4 and SATA 6 Gbps wiring. The only other expansion slot is a PCI-Express x4 wired to the B550A chipset, which is likely gen 2.0. Other storage connectivity includes six SATA 6 Gbps ports. USB connectivity includes two USB 3.2 gen 2 ports (from which one is type-C), and six USB 3.2 gen 1 ports (from which two are by headers). Network connectivity...

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Shrink Ray Wielder
Jan 20, 2018
Yet another product of OEMs demanding new names to stick on their marketing materials regardless of whether new products actually exist.

GamersNexus has a board analysis up, far better than TPU's article. According to them the B550A chipset is sold by AMD to board partners as an OEM only part, not for retail. So hopefully people who don't buy prebuilts won't ever have to care about this.