Heatsink with Blowers (a.k.a. Heatsink with Fans) for a 15-inch Aluminum PowerBook G4 with the Double-Layer SuperDrive®. This part will only work on the 15-inch Aluminums that were originally equipped with the Double-Layer SuperDrive®. These PowerBooks are sometimes referred to as Hi-Res or DLSD 15-inch PowerBooks.
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