If you set your android tablet in something called 'developer mode', it usually enables USB connections to treat an android device as a mobile drive.
Depending on your android version, getting a tablet into 'developer mode' usually involves navigating to the settings screen, clicking (or tapping) 'about' and then repeatadly tapping on the version (or build) number. After 7 or 8 taps, a pop up appears saying 'developer mode enabled'.
Then, when you plug in your USB cable to your computer, it should appear as a USB device and enable you to browse to it as if it was a USB drive.
If you google 'enabling developer mode on xxxxx' where xxxxx is the name of your tablet, you should be good to go.
Bit techy on here today, isn't it?