I recently bought a SainSmart Android 4.1 unit to plug into the TV:s HDMI interface. I works fine. I just wanted to point out how to fix the glitch that it doesn't wake up from hibernation. If the unit is powered by the adaptor (and not the USB, which only gives power when the TV is on) one can press the power button on the WiFi keyboard, which causes the unit to hibernate. However, it is necessary to go into Settings/Developer Options and set Stay Awake. Now the unit will wake up from hibernation, when a key is pressed on the keyboard.