Apple Power Macintosh (7100 Series) - Manual (Page 121)

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Appendix B
Installing an Expansion Card
Read this appendix for instructions
on installing an expansion card
in your computer.
You can install printed circuit boards (called cards) in the computer for video
and graphics applications, networking and communications, additional
processing power, and other purposes. The cards fit into connectors, called
expansion slots, inside the computer.
Your Macintosh has three expansion slots, each designed to accept a NuBus
card.
IMPORTANT Some cards may need to be installed by an Apple-authorized
service provider. Check the information that came with the card.
WARNING Do not remove any factory-installed cards from inside your
computer. Pulling a factory-installed card out at an angle can damage
your equipment. Any NuBus expansion card you install will not operate
properly if the factory-installed card has been removed. If a factory-
installed card needs to be removed, see an Apple-authorized service
provider.
WARNING Be sure to use the Macintosh NuBus Adapter Card designed
specifically for your model of the computer. Failure to do so could
damage the card and your computer.