I have a Power Macintosh 7300. It came with a 256K Level 2 cache module. I would like to upgrade the Level 2 cache.

Page 99 of the User's Guide states: You can replace the existing cache module with a larger one. Cache modules are currently available from third-party manufacturers in various sizes up to 1 MB. However, Apple recommends that you use an Apple-brand cache module if you want to upgrade your existing cache.

It appears that Apple does not sell or support cache modules larger than 256K so how do I upgrade my cache with an Apple-brand cache if Apple does not sell one? Is there a third-party manufacturer that Apple recommends?

The statement in the User's Guide can cause confusion. Though Apple does not sell or support a Level 2 cache module larger than 256K, a number of Power Macintosh systems have been designed and built to theoretically accept Level 2 cache modules larger than 256K

No official testing has been done by Apple on larger modules however. The design, testing, sale, and technical support of larger L2 cache modules is entirely up to third-party developers.

Apple Computer cannot endorse a particular brand of Level 2 cache.