Apple Computer beefed up its line of PowerBook notebooks on Monday, doubling the memory and adding combination drives that can burn CDs and play DVD movies.
The Cupertino, Calif.-based company also unveiled an upgrade program for owners of new PowerBooks released in October. Starting in mid-January, those Mac owners will be able to upgrade their notebooks' DVD drive or CD-rewritable drive to a combo unit for $299.
The introduction of combo drives solves a major shortcoming for the PowerBook, Apple's portable for the professional market. The company also sells iBook, a lower-cost laptop for consumers.
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