You attached a USB stick to your Android tablet with a cable like this (male micro USB plug to female USB port). The USB drive has files on it that you want to view. How do you view these files?
1. In Android, go to Settings -> Storage -> Mount USB Storage.
2. Next, go to Click the Google Apps Icon (six squares in a circle). It should take you to Apps/Widgets. Go to File Manager -> All files -> USB Storage.
3. Now you can browse to the files you wish.