36 Chapter 2
Your Macintosh has four expansion slots, each of which has a PCI card up to 12 inches long.
Install only expansion cards that come with Macintosh driver software and that comply with
the PCI 2.1 standard. NuBus
™
cards cannot be used in these expansion slots.
The one unoccupied PCI slot can accommodate a mixed voltage (5.0 V or 3.3 V) card with a
33 MHz frequency and 32-bit or 64-bit data widths. This slot will not accommodate a 66 MHz
card. (The slot labeled number 1 accommodates a 3.3 V graphics card with 66 MHz and 32-bit
data width. This card is already installed in your computer.)
Expansion Card Power Requirements
The combined power consumption of expansion cards must not exceed the limits specified
for your Macintosh model. For details, see the Technical Information booklet that came with
your computer.
m Your computer comes with three pre-installed PCI cards. You can add one more card that
uses up to 25 W.
For instructions on installing PCI cards, see the section “Installing a PCI Expansion Card” on
page 52.
About the Server’s Battery
The Macintosh has a 3.6 V lithium backup battery installed on the main logic board. If you
have intermittent problems starting up your server and the date randomly resets itself, you
need to replace the battery. Replacement batteries for the Macintosh are available in many
electronics and computer stores. You can install the new battery yourself or have an Apple-
authorized dealer do it for you for a fee.
Replacing the battery may cause some settings on your computer, such as the date and
network settings, to revert to factory default settings.
Warning To avoid damaging your computer and expansion card, do not attempt to
install any expansion card without first checking the documentation for that card. If the
documentation specifies that an Apple-certified technician must install the card (usually
because the installation requires special training or tools), consult the service and support
information that came with your computer for instructions on how to contact an Apple-
authorized service provider for assistance. If you attempt to install the card yourself, any
damage you may cause to the computer or card will not be covered by the limited
warranty on your computer. If the card is not an Apple-labeled product, check with an
Apple-authorized dealer or service provider to see if you can install it yourself.
Important Make a note of the settings for communications programs before you replace
the battery.
