Nexus 10 Recovery - USB not enabled
When entering recovery mode on the Nexus 10 (Android 4.4.3), when I connect the tablet up the a computer it does not detect a USB device. This is not the usual driver related issue - nothing shows up in device manager - it is as though the USB cable isn't even connected. The usual sound from Windows when you connect a device does not sound.
I can connect fine when the Nexus 10 is booted, and I can call "adb reboot recovery" and the tablet reboots to recovery, but then there is no USB connection.
To reiterate - there are no driver issues as I'm not even getting as far as loading a driver! I've tried two different computers (Windows 8.1 and Windows 7) and two different USB cables.
Anyone seen this before? Why is USB disabled when in recovery?