We encountered an error while trying to save the changes. We've made a note of it, and we'll fix the problem as soon as possible.
Getting to the optical drive takes a bit more work...
The rear vent is held in place by both Phillips #00 and T8 Torx screws.
The cast aluminum vent plate is painted with a satin white rubberized paint and probably adds a good amount of rigidity to the device.
The lack of structural supports like these in previous plastic MacBooks accounts for their flexibility.
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