Symptom
The read/write indicator lights (LED) on SuperDrives are hidden behind the case plastics of Power Mac G4 computers. On SuperDrive DVR-103 mechanisms with firmware versions 1.22 or 1.33, the drive activity lights are faintly visible behind the plastics. After installing the Power Mac SuperDrive Update available, the drive activity lights no longer work.
Solution
This is expected behavior for any version of the firmware later than version 1.33. It does not affect the SuperDrive's ability to read and write media.
For more information about the SuperDrive Firmware Update, see document 86130, "
SuperDrive: Important Information About Using With High-Speed Media".