av Ogga » man 08.05.2006 8:44
Fra apple.com
The 120 mm round discs are the only size and shape that work with either slot loading or tray loading drives.
Warning:These discs must be between 1.2 mm and 1.5 mm in thickness. Discs that are thicker than 1.5 mm or thinner than 1.2 mm are not supported and any damage caused will not be covered under your Apple warranty or applicable extended service contract.