Peripheral Component Interconnect or shortened to PCI is is a local computer bus used for attaching hardware devices in a computer. PCI was introduced by Intel in 1993. Even nowdays PCI remains a very common interface, despite the availability of faster interfaces such as AGP or PCI Express. Primarily PCI was used for attaching network cards, sound cards, modems on PSc.

Here are some hardware specifications for PCI:

• 32-bit or 64-bit bus width
• 33.33 MHz clock with synchronous transfers
• peak transfer rate of 133 MB/s for 32-bit bus width
• peak transfer rate of 266 MB/s for 64-bit bus width
• 5-volt signaling