PC/104 & PC/104 Plus Connectors Amphenol FCI PC/104 and PC/104 Plus Connectors are modular, ruggedized versions of the PC 2.54mm pitch and PC 2mm pitch, respectively. The PC/104 is an embedded computer standard defined by its compact footprint. The specification is based on the 104 signal contacts on the two bus connectors: 64 pins on P1, plus 40 pins on P2. The PC/104 modules mate together via stackable ISA, PCI, and PCIe® bus connectors and can be stacked or connected like building blocks. The PC/104 stack could include a CPU, power supply module, and peripheral modules. These connectors feature PC/104 modules that are designed to work with modules from multiple manufacturers. Amphenol FCI PC/104 and PC/104 Plus Connectors are ideal for communication, industrial monitoring, and embedded computing applications.