This is a housing case for the Adafruit Trinket Arduino compatible micro controller (Trinket board not included). The features of this are 1) Small: It is not much bigger than the micro controller itself 2) Easy Snap in and out: The micro controller board snaps in and out easily, allowing you access to the board for soldering. 3) Reset button: The Trinket needs the reset button pressed to upload your program to it, the case has a button that you can press to reset without having to open the case up. 4) Trenches: There are small trenches below the pin holes that give space for solder joints to sit. 5) Side ports: To allow wires or header pins to exit the case. Note: This should print without support. Support should not be needed and is hard to remove properly. Assembling: 1) At a slight angle, slide the rear tab on the back of the trinket into the gap at the rear of the case. 2) Gently slide the Trinket board forwards onto the seating pins with a very gentle downwards push. You will hear a click as the seating pins lock the board in place. 3) Hold the Lid upside down and insert the Reset Button into the hole making sure that it is aligned across the Case not along the case. 4) Turn the Base upside down and snap it onto the lid.Making sure that the Lid and the Base parts are aligned correctly (the Button part of the Lid should go over the button on the Trinket board and the gap in the lid should go over the USB connector).