The 17-inch model was unveiled on April 24, 2006. The first design was largely a carryover from the PowerBook G4, but uses Intel Core CPUs instead of PowerPC G4 chips. The 15-inch MacBook Pro weighs the same as the 15-inch aluminum PowerBook G4, but is 0.1 inches (0.25 cm) deeper, 0.4 inches (1.0 cm) wider, and 0.1 inches (0.25 cm) thinner. Other changes from the PowerBook include a built-in iSight webcam and the inclusion of MagSafe, a magnetic power connector designed to detach easily when yanked. These features were later brought over to the MacBook.
The optical drive was shrunk to fit into the slimmer MacBook Pro it runs slower than the optical drive in the PowerBook G4 and cannot write to dual-layer DVDs. Īoth the original 15- and 17-inch model MacBook Pro computers come with ExpressCard/34 slots, which replace the PC Card slots found in the PowerBook G4.
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