YUEYOU PCI Express 1 Port Parallel and 2 Port Serial Card with 16C950 UART For Windows XP/Vista/Win7/8 Compliant with PCI Express Base Specification 1.1 Supports 1* parallel port, 2* UART serial ports Two high speed serial ports with data transfer rate up to 230400bps Easy installation into almost any system 128-byte deep FIFO per transmitter and receiver