The tablet / Android is not RECOGNIZING the attached keyboard for most ppl. Turn on HDMI under ‘Settings —> Display —> HDMI Settings’. Then go into your ‘Settings —> Language and Input’. Plug in an external USB keyboard or mouse into the device. (mouse worked for me). After a short while, less than a minute, you should see the option for ‘Physical Keyboard’ appear in the page ‘Language and Input’ (it will show underneath ‘Google Voice Typing’ option.) Click/tap ‘Physical Keyboard’ and choose your Keyboard Layout eg. English U.S. The ‘Physical Keyboard’ option may disappear and reappear a few times causing the keyboard/mouse to work/not work as this recognition is intermittent. KEEP the USB keyboard or mouse plugged in and POWER OFF, not just screen off. Wait 30 seconds and power on. This should recognize the ‘Physial Keyboard’ option all the time and hence, your keyboard should work all the time. Until it physically gets broken. Let’s hope not :) Unplug the external USB keyboard or mouse.