It's been a busy year for motherboard vendors ... It's a bit short on rear IO ports, though. For AMD enthusiasts, you could choose a last-gen chipset or something with the latest X870.

A fully equipped PC motherboard has built-in controller circuits for all the basic peripheral devices. It has sockets to plug in internal drives (storage drive and CD/DVD drive) and ports for ...

as demonstrated by [Jeff Geerling], giving the CM4 a Mini ITX formfactor and a ton of IO. (Video embedded after the break.) The Seaberry sports a full-sized x16 PCI-E port, with only 1x bandwidth ...