Apple Power Macintosh 9500 Series - Manual (Page 148)

Upgrading the processor
Your computer’s processor can be upgraded with the installation of a
processor upgrade card.
To upgrade your processor, remove the old processor card, then follow the
procedure in this chapter for installing expansion cards to install the new
processor card. (Note that you do not need to remove the access port cover as
described in step 6.)
Refer to the documentation that came with the processor upgrade card for
instructions specific to the card.
Processor card (behind auxiliary fan)
138 Appendix B