Terminal Adapter for the Arduino Nano V3.0
This is a terminal adapter for the Arduino Nano. It is marked for Arduino Nano 3.0, however you can still use this adapter for the older revisions of the board (just have to remember that A0-A7 are in the reverse order). You can use this adapter to easily hook up Arduino Nano to an outside world via hook up wires.
Using wire screw terminals have a huge advantage of not having to solder wires to the Nano but still provides a solid connection with the screws.