... optional USB, RS232, AV in Support Headrest Mounting 8" Vehicle Tracking System WinCE/Linux, WiFi, Bluetooth, LAN, GPS optional, AV inSpecifications:8 ... VGASupport batteryAccessories:P/S2 to RS232DC adapterCD driveBracket 8" Vehicle Tracking System WinCE/Linux, WiFi, Bluetooth, LAN, GPS optional, AV in ...