No solution, just letting you know I am having the same problem with my H202 and KA1. I connect the Kobo to the computer (have tried 4 different cables with 3 different computers (one running Windows 7, one running Windows 8.1, and one running Windows 10). Most of the time the Kobo connects ok and I can see it in File Explorer. Calibre will get the list of books on the device (most of the time), and sometimes I can even transfer one or more books. But many, many times it loses the connection in the middle of the transfer and I have to disconnect, reboot the computer, reconnect the Kobo, let the computer scan the device and "fix" it, and start the entire process over again. The same USB ports can see flash/thumb drives and other cabled USB devices just fine; only the Kobo H202 and KA1 have this continuing problem. Sometimes after a round of connecting, losing the connection, disconnecting, rebooting, etc. I get the "USB device not recognized" error, so I start again by rebooting the computer, etc. etc. etc. Something is going on ONLY with Kobo devices, and I am beyond frustrated.
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