It's easy as step by step.

Mi Problema

Need more storage for video and picture files.

Mi Solución

Just slowly step by step. Not too fast because need to pay attention when move part in/out from mac.

Mi Consejo

Watch out when install power module back to mac. The power line need to be under the first half of power module then go up to connect to main board. If not, the HD will not fit into slot and cannot close main back to its position.