The 5402e ACB-MP+4.PCIe is a PCI Express synchronous serial interface offering four configurable ports for RS-232, RS-422, RS-485, RS-530, RS-530A, and V.35. Built with the Zilog Z85230 ESCC, this adapter supports high-speed data rates up to 128K bps and is ideal for military, satellite, radar, and banking applications..