Can anyone fill me in on the nuts and bolts of the USB link between the controller and device? What's the connections protocol? Does the connection require USB 2.0 or 3.0? Does it depend on an OTG connection? Just curious about the tech requirements for connecting to a device. Ive got a very unique situation that extremely restricts the resources available for tech support and am having to troubleshoot a connectivity issue on my own and can't find this info anywhere and suspect it may be a factor in my problem.