Embedded Board eXpandable (EBX) is a standardized computer form factor.

This format was created for embedded computer systems by a consortium including Motorola

Motorola

Motorola, Inc. was an American multinational telecommunications company based in Schaumburg, Illinois, which was eventually divided into two independent public companies, Motorola Mobility and Motorola Solutions on January 4, 2011, after losing $4.3 billion from 2007 to 2009...

 and Ampro. EBX systems typically were embedded PowerPC

PowerPC

PowerPC is a RISC architecture created by the 1991 Apple–IBM–Motorola alliance, known as AIM...

 or PowerQUICC

PowerQUICC

PowerQUICC is the name for several Power Architecture based microcontrollers from Freescale Semiconductor. They are built around one or more PowerPC cores and the QUICC Engine which is a separate RISC core specialized in such tasks such as I/O, communications, ATM, security acceleration, networking...

 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

PC/104

PC/104 is an embedded computer standard controlled by the which defines both a form factor and computer bus. PC/104 is intended for specialized embedded computing environments where applications depend on reliable data acquisition despite an often extreme environment...

 connection subset for peripheral expansion. Optional connectors for PCMCIA are allowed.