Bus Type: 32 Bit PCISpeed: Up to 921Kbit/secI/O Address: "Plug & Play"IRQ Selection: "Plug & Play"Auto Switch RS-422/485 technology makes it easy and convenient to manage the device without the need for jumper or switch settingsARSCTM (Auto RTS Signal Control) technology can identify the status of the data transceiver or receiver and send the RTS signal automatically, instead of using software to control the transmitterUser friendly graphical interfaceCard Connector: 37 Way D FemaleAdapter Cable: 37 Way D Male to 4 x 9 Way D MaleSoftware Compatibility: DOS, Windows 98SE/ME/NT/2000/2003/XP/Vista, OS/2, Linux 2.0.x/2.2.x/2.4.18/2.4.203 year warranty