Specifications

Rear housing includes the following parts:
Wi-Fi antenna in silver circle behind Apple logo
Microphone
Power button and cable
AC inlet
Gaskets
Important: Replacement of any of these parts require replacement of the entire rear housing. These components are not available
as individual parts.
Always handle rear housing with 2 hands in the lower left and right corners.
Handling rear housing part incorrectly could flex aluminum and cause alignment issues.
Service Considerations 27"
Chin Strap
The chin strap must be removed for the majority of repairs.
Chin strap screws are very small. There are 4 longer screws and 1 short. Install the short screw in the center hole.
Replace screws in the following order: