... optional USB, RS232, AV in Support Headrest Mounting 8" Vehicle Tracking System WinCE/Linux, WiFi, Bluetooth, LAN, GPS optional, AV inSpecifications ... 10/100M (RJ45)USB Host 2.0 x 2, USB Device 2.0 x 1RS232 x 2SD card supports up to ... VGASupport batteryAccessories:P/S2 to RS232DC adapterCD driveBracket 8" Vehicle Tracking System WinCE/Linux, WiFi, Bluetooth, LAN, GPS optional, AV in ...