MacBook 13" Unibody (Model A1278) Heat Sinks
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MacBook Unibody (A1278) Heat Sink
This part attaches to the processor and helps dissipate heat.
Apple's introduction of the MacBook Unibody 13" introduced a new case milled from a single brick of aluminum. Also new to this version is a switch to SATA optical drives and the controversial loss of a Firewire port.
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