LAUNCH OBD BOOK OBDII Auto Scanner111 USB Port To connect the unit and computer for updating.2 Diagnostic Cable To connect the unit and vehicle socket fordiagnosis.3 Power Key Press it to turn the unit on when there is nosocket for power (when using battery for power).4 [ ] Key To return to the previous interface.5 [↑] Key To move the cursor to upper item in the menu.6 [↓] Key To move the cursor down in the menu.7 [ ] Key To confirm and execute this operation.Main Unit StructureTesting interface:It is a 16PIN built-in male connector to connect with the diagnostic connector.Screen:Two 160×160 array high definition screens with back light for displaying all theinformation during testing.Indicators:The yellow, green, red indicators are used as visual aids to make it easier for the userto determine test condition.Yellow indicator: it says that the communication is “OK” and the test is normal.Green indicator: it says that it’s not sure if DTCs occur.Red indicator: it says that DTCs occur.