This is a Dual layer replacement Apple SuperDrive DVD-R Burner For the MacBook 13" Unibody and MacBook Pro 15" Unibody and MacBook Pro 17" Unibody. (Not compatible with previous Macbook or Macbook Pro Models, only Late 2008 Unibody revisions.) This drive uses a SATA connector interface as opposed to the previous PATA interface. This makes the drive incompatible with previous models. Specifications: * 5X Speed DVD-RAM Writing * 8X Speed DVD±R Writing * 4X Speed DVD±RW Writing * 4X Speed ±R (DL) Dual layer Writing * 24X Speed CD-R Writing * 24X Speed CD-RW Writing * 8X Speed DVD-ROM Reading * 24X Speed CD-ROM Reading One Year Warranty on all parts and labor!