You have to be EXTREMELY careful when detaching and reattaching this cable!!! It carries your Bluetooth, iSight camera, and Wifi connections!! I was being very careful when reattaching it and ending up either messing up the connector on the logic board or the cable itself- both cases are equally as bad. The cable doesn't snap back in or have guides, and it is therefore difficult to know if it's in as far as it needs to be, etc. If you mess up the connector on the logic board (that's what it's connecting to), you have to replace the entire logic board, and if you mess up the cable itself (it has very small, delicate metal connectors), you have to replace your entire display!! Each costs around $500/ea! I did a ton of research before embarking on this procedure and really wish someone had made a note of this prior- learn from my mistake!