First of all we must remove the tray from the cards.
Step 2 Back case
Remove the two Torx screws (T3) that hold the back shell, and with the help of a tool we will unhook all the edges of the casing.
Step 3 Side keys
To finish, with a pair of tweezers we will disengage the lateral keys that we are going to replace.
Video Tutorial summary
In this video you can watch a quick summary of the tutorial, but we recommend to follow the complete tutorial, with its explanations and detailed images.