For BMW inpa K DCAN New Switch K+CAN FTDI OBD2 USB Diagnostic Interface for BMW Series Full Chip EDIABAS K+DCANPCB board: Specifictions: PCB board chip: FTDI Chip Stable Function Require Window System: Windows XP WIN 7 32Bits Only(close anti virus program) Language: English New Switch Function: With the switch on the device,you can use it do more cars . Since some cars need disconnect,then can use k+dcan,also somes need connect that two pin then can do,but with our switch,you can use derectly easier,so we say it can support more cars easier With FTDI Chip with