2 x RS232, RS422 or RS485 serial ports for PCI, 2 x DB9 male OS support: DOS, Windows 98, NT , 2000, XP, Win7, Win8, 2003, Linux
2 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