Turn your HD TV into an Android 4.1 powered PC with Chinavasion’s latest Android 4.1 mini PC stick ‘Key II’. The device is equipped with a 1.2GHz dual-core processor, a 1... Key II Android 4.1 Mini PC Stick
"The Android OS version on this device cannot be upgraded or flashed and any attempts to modify the default OS will void the warranty. As a wholesaler, Chinavasion provides no software support, advice, or training regarding the Android operating system and software." After reading this, my interest in the device disappeared....
I have the Rikomagic MK802IIIS, it has the same specifications, and im very happy with it and so is my family, i use it as a mediaplayer (app: mizuu, as xbmc does not support the mali400 in the MK802IIIS yet) These guys do give support and there is a nice tutorial on how to flash and root the device, with the latest update the device is rooted with stock rom.
How do you manipulate the UI? A mouse? I don't see why I would buy one of these instead of just hooking up a normal tablet or smartphone to the TV. Plenty of them are capable of it.