PIO24PCI supports 3.3 V/5 V PCI bus, while the PEX-D24/D56 supports PCI Express bus. PIO24PCI consist of three 8-bit bi-direction ports. The 8-bit ports are named as port A (PA), port B (PB) and port C (PC) respectively. All ports are configured as inputs upon power-up or reset.
ICPDAS: PIO-D24U