This product is either discontinued or we cannot get that from suppliers.
Startech PCI2S550_LP, Port-2, Bus PCI / PCI-X (5 / 3.3V), 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 1 - PCI Low Profile 2 Port Serial Card, 1 - Low profile bracket, 2 - Screws, 1 - Driver CD, 1 - Instruction Manual.
This 2 Port 16550 Serial Card can be installed in a PCI slot to add two serial ports - a cost-effective solution for connecting any new serial device or old legacy serial device, with data transfer rates of up to 115.2 Kbps.