I bought this as a replacement for my Power Mac G4 Superdrive, which like many others has stopped working properly. having read reviews here and elsewhere, I bought this, and must say it's a load fast than the existing Superdrive. Open her up, remove the existing drive, slot in the new one and away you go. No software needed. Remember to set the drive to 'master' if you're replacing the existing drive - mine had the 'slave' setting as the default when I unpacked it. Do a web search if you're not sure.
One caveat - on my Mac (mirror-door Dual 1.42 G4), you MUST remove the flat front panel on the CD drawer - the bit with 'RW', 'DVD Multi Recorder' and the Compact Disc logo embossed on it, as the Mac's CD door aperture is too small for the drawer with this still on it and the drawer won't open once you've installed it - thanks Apple! It does come off easily - it's just clipped on, but please remember to do it CAREFULLY!!