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
Asus Prime H310M-A R2.0 Intel LGA1151 DDR4 Desktop Motherboard I/O Shield READ
$49.95
***NEW*** BCM RX67Q Gaming Motherboard | Intel Q67 2nd/3rd Gen. | LGA1155 | DDR3
$29.77
Gigabyte Z370P D3 ATX Z370 LGA1151 Motherboard (Support Intel 6/7th 8th 9th)
$59.99
Asrock Z390 Phantom Gaming 4S/AC Wifi 8th/9th Gen Intel 1151 Motherboard Bulk
$47.60
ASUS Prime Q270M-C LGA1151 DP HDMI VGA SATA 6GB/s USB 3.0 MicroATX Motherboard
$37.99
MSI A320M-A Pro mATX AM4 Motherboard (Ryzen 1000-5000 Ready)
$49.99
ASUS PRIME Z690-P WIFI D4 ATX Motherboard Intel LGA1700 DDR4 HDMI
$99.99
ASUS TUF Gaming B550-PLUS WiFi II AMD AM4 ATX Motherboard
$114.99