This product is either discontinued or we cannot get that from suppliers.
Startech PCI2S550, Bus PCI (5 Volt), Port-2, FIFO 16 Byte, Max Baud Rate 115.2 Kbps, MTBF 6,548,788 Hours, Connector 1 - PCI (5V, 32-bit) Male, External Ports 2 - DB-9 (9 pin, D-Sub) Male, O/S Windows® DOS, 95, 98SE, 2000, CE 5.0 / 6.0, Embedded System 2009, XP Embedded, POS Ready 2009, XP, Vista, 7, 8, 8.1, 10, Included 2 Port PCI Serial Card, Low Profile PCI Bracket, Driver CD, Instruction Manual.
The PCI2S550 2 Port 16550 Serial Card can be installed in an available PCI slot to add two RS232 serial ports to your system. A cost-effective solution for connecting any new or legacy serial device, with data transfer rates of up to 115.2 Kbps.