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.
Since the AirPort/Bluetooth board is mounted inside the all-metal case of this machine, Apple added an antenna that is mounted on the frame for the optical drive opening. Pretty clever!
This antenna is not found on the MacBook Unibody, probably because the case of that machine is plastic and blocks less RF transmission & reception.
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