Bluetooth/USB/RS 232 Interface BLUETOOTH allows wireless Communications between STAG-200, STAG-4, STAG-300 and your vehicle’s computer equipped with BLUETOOTH module. USB, RS 232 enables communication of STAG-XL, STAG-50 (232/50 adapter required), STAG-100, STAG-150, STAG-200, STAG-300 as well as G-2005 tester and DIAG-01 testing device with the computer via COM serial port (RS 232) or USB port (Interface USB).