Read a bit more carefully this time, Asrock IMB-X1712 is a DDR4 option but that also seems hard to source… :-/
Super Micro didn’t say anything about the ECC RAM. I ended up returning both RAM and the board (realized no wifi M.2, limited storage M.2 options, stupid PCI (not PCI-e) slot. Going to wait for the Gigabyte or possibly Asrock Rack options.
I am checking the boards BIOS update page more or less daily hoping to see anything about 13th gen CPU support but so far nothing
@Trist I am not the only one then! That bios url must have huge traffic!