1. Mount the rubber feet.

2.
a) Assemble the Raspberry Pi original cooler with the Raspberry Pi 5.
b) Optional, if using hats assemble the stackable 40 pin GPIO header. This will create an space between the hat and cooler to allow airflow.

3. Insert the unit into the case. You might need insert it with this angle.

4. Secure the board with the pan head screws. You need to use a small screwdriver and do it with an angle. 

5. Close the case and insert Micro SD card.