PC/104 is a family of embedded computer standards which define both form factors and computer buses by the PC/104 Consortium. Its name derives from the 104 pins on the interboard connector (ISA) in the original PC/104 specification and has been retained in subsequent revisions, despite changes to connectors. PC/104 is intended for specialized environments where a small, rugged computer system is required. The standard is modular, and allows consumers to stack together boards from a variety of COTS manufacturers to produce a customized embedded system.
| Specification |
Bus Communication |
| PC/104 |
ISA (AT and XT) |
| PC/104-Plus |
ISA and PCI |
| PCI-104 |
PCI |
| PCI/104-Express and PCIe/104 |
PCI and PCI Express |