2 x RS232, RS422 or RS485 serial ports for PCI, isolated, built-in termination, 2 x DB9 He
Product code: RS485-2+PCI-UNI2 x RS232 / 422/485 Ports PCI version 2.1 (32bit) - 3.3 / 5.0V RS232: TX, RX, CTS, RTS - Optical ISO RS422: TXD +/-, RXD + / -, RTS, CTS, GND RS485: Data + / Data, GND 2 x DB9 male Up to 921.6Kbps Built-in Termination: 120 Ohm DOS, Windows 98, NT , 2000, XP, Win7, Win8, 2003, Linux