Originally Posted by peterk-1
Just in case this helps. In usbdeview I have 5 nexus 10 entries. They all have the vendor id of Google 18d1 and a unique Product ID . Which driver connects is related to the device settings:
PID Device settings
4ee2 MTP + USB debugging
4ee6 PTP + USB debugging
d002 USB debugging
With the device connected I can change settings and see the change in connected driver in USBDeview.
This info does provide me with some way forward. With USB , when connected ptp I have a nexus 10 USB composite device and a nexus 10 digital still camera connected with the green light in USB deview, and also a blank device name, connected, description android composite device with a purple light. I'm guessing purple means not working. But changing drivers does nothing to change the purple light. Switching to mpt gives an additional blank name Google nexus adb interface also with purple light shown as connected. All connected devices show vendor 18d1. Drivers tried 1) clockworkmod (supplied with skipsoft); 2) naked drivers 3) Google drivers. Any clues what to try next?