Nicholas Humfrey on Twitter: "@lankydanman It is a ASRock Rack J1900D2Y PC motherboard that I put in a 1U enclosure. I think it is aimed at OEMs, so USB boot seems like
ASRock J1900D2Y Mini ITX Server Motherboard - Newegg.com
SVR MB ASROCK RACK B550D4ID-2L2T R - Walmart.com
ASRock J1900D2Y Mini ITX Server Motherboard - Newegg.com
SOLUTION] Hardware fix on CSI to mitigate HDMI backpowering for AIMOS KVM's · Issue #382 · pikvm/pikvm · GitHub