PC/104 is a standard for CPU modules in the size of 96x90mm or 96x105mm. The PC/104 CPU modules can be extended via PC/104 or PC/104 bus. By applying cables for the die I/Os an individual placement of the individual connectors are possible on the housing.
Qbi Compact boards are boards offered by GigaIPC which are similar to NUC sizes (105x110mm). The performance ranges from low performance x86 CPUs to high performance Intel® processors and are cooled fanlessly.