Apple Macintosh Performa 6400 Series - Manual (Page 165)

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Appendix B
Installing Additional Memory
You can install additional memory—dynamic random-access memory
(DRAM)—in your computer. DRAM allows you to work with more programs
and larger documents. Additional memory comes in packages called Dual
Inline Memory Modules, or DIMMs. Altogether, you can install a maximum
(total) of 136 megabytes (MB) of DRAM in this Macintosh model. You can
also install an optional High Performance Module (level 2 memory cache) in
the cache slot in your computer for additional processing power.
For more information about memory, see the “Memory” topic of Macintosh
Guide, available in the Guide (h) menu.
WARNING Although instructions for installing DIMMs and a High
Performance Module are provided in this manual, Apple Computer
strongly recommends that you have an Apple-certified technician install
additional DRAM or High Performance Modules. Consult the service
and support information that came with your computer for instructions
on how to contact an Apple-authorized service provider or Apple for
service. If you install additional DIMMs yourself, you risk damaging
your equipment, and this damage is not covered by the limited warranty
on your computer. See an Apple-authorized dealer or service provider
for additional information about this or any other warranty question.
Read this appendix to learn
how to install additional
memory in your computer.