We have just got a UIA218B iDisplay 18.5" quad-core tablet PC. Includes: 1GB RAM, 8GB ROM, Android 4.2.2, WiFi, power supply, RJ45, 2 x USB, earphones line, on/off button, volume control, back button. No touch screen (mouse is needed).
This video will show you unboxing the HP Slate 21 All-in-one with a short review. The HP Slate 21 All-in-one is not just a screen or an Android TV , it is more: it feels more like a 21" tablet with touch screen and Android 4.2. We bought it in less than 300 USD in the Black Friday sales. Can be used for digital signage.