General Knoppix support for those who've read the FAQ at the Wiki
Gigabyte AMD B550 UD AC Gaming Motherboard - AMD B550 Chipset - AM4 Socket - AMD
$79.99
ASUS H110M-R Motherboard Intel 6th/7th Gen LGA1151 DDR4 Micro-ATX i/o shield
$42.00
Gigabyte Z370P D3 ATX Z370 LGA1151 Motherboard (Support Intel 6/7th 8th 9th)
$59.99
MSI PRO B650-P WiFi AMD AM5 DDR5 WiFi 6E ProSeries Motherboard
$80.71
Asus Prime H310M-A R2.0 Intel LGA1151 DDR4 Desktop Motherboard I/O Shield READ
$52.95
ASUS Prime Q270M-C LGA1151 DP HDMI VGA SATA 6GB/s USB 3.0 MicroATX Motherboard
$34.19
Asrock Z390 Phantom Gaming 4S/AC Wifi 8th/9th Gen Intel 1151 Motherboard Bulk
$47.56
Gigabyte Ultra Durable B550 GAMING X V2 Desktop Motherboard
$87.99
MSI PRO B650-P WiFi AMD AM5 DDR5 WiFi 6E ProSeries Motherboard
$96.01
MSI PRO B650-P WiFi AMD AM5 DDR5 WiFi 6E ProSeries Motherboard
$84.96