Apple part number 678-0576.
7mm 8X DVD-R/CDRW SuperDrive Burner/Reader Internal SATA Optical Drive.7mm 8X DVD-R/CDRW SuperDrive Burner/Reader Internal SATA Optical Drive Apple Service Part: LG 12. Apple Service Part: LG 12.Slot-loading 8X DVD-R/CDRW SuperDrive.