Does your old Mac have a CD Loaded CD-ROM drive? If so, this is what you've been looking for. These are brand new injection molded CD Caddys. These are proudly made in the USA. This will work with older Apple CD drives, both internal and external. For example, it will work with AppleCD SC, AppleCD SC Plus, AppleCD 150, AppleCD 300, as well as many early Sony CD-ROM drives.