This is a replacement superdrive for the Intel iMac. (Picture is of Matshita drive, drive will be the brand you select.)
Note that this drive uses an ATA Bus and NOT a SATA bus. You need to check your bus type before placing an order to verify you order the correct drive as iMacs used both SATA and PATA versions of the optical drives. You can check which type bus your model has by going to System Profiler or System Report in About This Mac menu.
Supported Media: DVD: DVD-R, DVD-RW, DVD+R, DVD+RW, DVD+R DL CD: CD-R, Multi-Speed CD-RW, High-Speed CD-RW, Ultra-Speed CD-R. Read Support: DVD: DVD-ROM, DVD-VIDEO, DVD-R, DVD-RW, DVD+R, DVD+RW & DVD+R DL. CD: CD-ROM(Mode 1&2), CD-ROM XA, CD-DA, Video CD, PhotoCD, CD EXTRA, CD-Text, CD-R, CD-RW. Write Speed: DVD-R: 8X DVD-RW: 4X DVD+R: 8X DVD+RW:4X DVD+R DL*2: 2.4X CD-R: 24X CD-RW: 16X Read Speed: DVD: Max 8x CAV CD-ROM: Max 24x CAV Data Buffer (size): 2 MBytes