High Quality Content by WIKIPEDIA articles! Embedded Board eXpandable (EBX) is a standardized computer form factor. This format was created for embedded computer systems by a consortium including Motorola and Ampro. EBX systems typically were embedded PowerPC or PowerQUICC based. The system board is specified as 8.00 by 5.75 inches (203.2 x 146.05 mm). It incorporates a PC/104-Plus connection subset for peripheral expansion. Optional connectors for PCMCIA are allowed.