PCI is a plug and play Expansion Bus model popular in the early days.

  • 32bit bus width
  • 64bit bus width
  • Runs at 33 MHz
  • Maximum throughput of 533 MBps
  • Uses Parallel Communication It has largely been replaced by PCIE

Burst Mode

A feature that enables very efficient data transfers

Slots

32 Bit

64 Bit

Voltage Keys

Expansion slots are either 3.3V or 5V keys. The placement of these indents determines the compatibility of the expansion card. Many expansion cards have 2 indents which allow them to be used for both 3.3V and 5V