Brainboxes 2 Port PCIe RS232 Serial Card

2 Port RS-232
Fits x1, x4, x8 or x16 PCI Express expansion slot
128 byte FIFO's with user-definable trigger level
921000 baud; true megabaud line drivers
Drivers for all popular operating systems
Sample programs, Test and Terminal software - all with source code

PCI ExpressCards RS-232

PCI Express (PCIe) is a serial I/O technology that has been designed to deliver significantly more data than the existing PCI standard, with a transfer rate of 2.5Gb/s in each direction per lane. PCIe is expected to replace PCI on all new personal computers to the end of this year. Initially, personal computers will have both PCI and PCIe slots available. Drivers for all popular operating systems including Windows 7.