Keyboard for it

Is there any list of compatibility features for the WDBHG70000NBK ?? I want to get a smallish (but not horribly small) keyboard to use wirelessly so I can facilitate entry …any advice?  I have a 7" android 4 tablet …will that do the trick?  I haven’t received the WD device yet… thanks!

There is a wd tv controller app for android that has keyboard.