How to root Teac Tc-7120 I want to root my new Teac TC-7120 device, but couldn't find any rooting guide targeting it.

What should I do?

I used the following Guide:
http://www.makeuseof.com/tag/root-android-phone-superoneclick-2/

But even though my device is connected and in Debugging mode, I can't get the ADB to recognize it.
I don't know about rooting your device, but I can help with getting your device to be recognised by your computer.

Exact instructions will depend on what OS you are running, but basically you need to find the .android folder in your home directory, and replace the adb_usb.ini file with this one.  this tells your computer to let adb work with a load of different usb devices.  You may need to type this on the command line to get it to work after you do this:

adb kill-server
adb start-server


and now running this should show you your device

adb devices