mtp
install driver
cd C:\Program Files (x86)\OnePlus USB Drivers\Android
windows xp
C:\Program Files (x86)\OnePlus USB Drivers\Android>adb devices
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
c3d39f68        unauthorized
windows 7
C:\Program Files (x86)\OnePlus USB Drivers\Android>adb devices
List of devices attached
c3d39f68        device