COM Express, a computer-on-module (COM) form factor, is a highly integrated and compact computer that can be used in a design application much like an integrated circuit component.
Wedge100BF has two BIOS ROMs: One on the COMe module, called "main BIOS", and an "external" one on the Wedge mainboard, called "external BIOS". The external BIOS can be accessed via BMC SPI interface. - Edgecore Wedge100BF: How to alternate boot BIOS?