PCI Express card provides 4 industry standard 9 pin RS232 serial COM ports, fits in any PCI Express slot e.g., x1, x4, x8 or x16 lanes. - Fits in x1, x4, x8 or x16 PCI Express expansion slot - 256 Byte FIFOs with user definable trigger level - 921,600 baud, true megabaud line drivers - Drivers for all popular operating systems - Sample Programs, Test & Terminal software - all with source code.