ATX is a well-known form factor for consumer motherboards. It has various versions like microATX, FlexATX and EmbATX for different market segments and vertical applications.

Micro ATX M/B

3.5" ESB is a de-facto standard for Taiwanese Industrial PC makers and is broadly adopted by customers. It is characterized by its 3.5" device size.

3.5" ESB (Embedded System Board)

5.25" ESB and EBX

EBX is a de-facto standard of industry set by Motorola/Ampro and some other industrial PC makers. Lots of IPC makers follow this standard to design their proprietary layout as a 5.25" embedded system board

This is a standard form factor, featuring ISA add-on cards, that is widely adopted in industrial applications during the last decade.

Half-sized ISA SBC

Half-sized PCI SBC

This is a non-standard form factor that adopts PICMG 1.0 signaling with PCI connection. It helps save the space, when the systems ae deployed in a space limited environmet.

PC/104 & PC/104-plus

Following the industrial standard set by PC/104 consortium, PC/104 and PC/104-plus are defined as a mini PC module with ISA extension (PC/104) and with PCI extension (PC/104-plus) functionality individually.