Industrial Universal PCI card with 144-channel Digital I/O. The PIO-D144U/D144LU universal PCI card supports 3.3 V/5 V PCI bus, while the PEX-D144LS supports PCI Express bus. These cards provide 144 TTL digital I/O lines that are grouped into eighteen 8-bit bi-directional ports. Each group of three 8-bit ports is arranged on the connector as Port A (PA), Port B (PB) and Port C (PC), respectively, and all ports are configured as inputs Ports on po..