These motherboards are typically installed with other equipment into a larger enclosure. They offer a full set of peripheral ports in a small form factor. Some include PC104 connectors for adding additional IO functionality. The size matches a desktop spinning hard drive.

WAFER-ADL-P-I5C
3.5 SBC supports Intel® Alder Lake-P Core™ i5 and Celeron® processor with 8GB LPDDR4x memory on board default, with DP ,HDMI™ ,dual 2.5 GbE, USB 3.2 gen 2, M.2, SATA 6Gb/s, COM, PCIe x4 for riser card and RoHS
16,395.00 16395.0 ZAR Excl. VAT
MF05V22
SBC 3.5" with i5-1145G7E CPU VPRO TPM2
16,430.00 16430.0 ZAR Excl. VAT
WAFER-ADL-P-I7C
3.5 SBC supports Intel® Alder Lake-P Core™ i7 and Celeron® processor with 8GB LPDDR4x memory on board default, with DP ,HDMI™ ,dual 2.5 GbE, USB 3.2 gen 2, M.2, SATA 6Gb/s, COM, PCIe x4 for riser card and RoHS
19,650.00 19650.0 ZAR Excl. VAT