ASRock Rack C3558D4I-4L Intel Atom C3558 Mini ITX Server Motherboard
Amazon.com: AsRock Rack E3C256D4I-2T Mini-ITX Server Motherboard Single Socket H5 (LGA1200) Intel Xeon E-2300 and 10th Gen Pentium Series C256 Dual 10GbE : Electronics
AsRockRack C246 WSI Mini-ITX Server Motherboard LGA 1151 Intel C246
Amazon.com: AsRock Rack C246 WSI Mini-ITX Server Motherboard LGA 1151 Intel C246 : Electronics
P11C-I | ASUS Servers and Workstations
SUPERMICRO MBD-A1SAi-2750F-O Mini ITX Server Motherboard with Intel Atom C2750 FCBGA1283 - Newegg.com