I got a USB endoscope (a video camera) that plugs into the USB port and is classified as an OTG device that you just plug in, but it didn't work, unless I use the OTG adapter. Even then, the connection was wacky; it would disconnect, then reconnect a lot. I thought that maybe the connection was loose, but it did that on another tablet too. Even on a new Galaxy S2, I had to use the OTG adapter. So I would like to ask if there's a way to improve the stability f the USB port and OTG function, as I'd like to use the camera more. I eventually plan on getting a digital oscilloscope that connects using the USB, probably with OTG function too.