Motherboards
Dell OptiPlex 790 Small Form Factor (SFF) LGA 1155 Motherboard
$20
Available 
Dell Vostro 230 JL1117 Rev: A01 Motherboard
$40
Available
HP dc7900 Convertible Minitower ATX Motherboard with Heatsink and I/O Shield
$40
Available
Intel Desktop Board DP35DP (AAD81073-205) ATX Motherboard With I/O Shield
$80
Available