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50 Chapter 3 Working Inside Your Computer
7 Press the card gently but firmly until the connector is fully inserted. Press only on the
bare areas of the card to avoid damaging the components.
Note: Don’t rock the card from side to side or force it. If you meet resistance, check the
connector and slot for damage or obstructions, then try inserting the card again.
8 Pull the card gently to see if it is properly connected. If it stays in place and its gold
connectors are barely visible, the card is connected.
9 Replace the PCI bracket and tighten the screw to secure the card.
10 Replace the side panel and push the latch down to secure it.
Replacing the Internal Backup Battery
Your Mac Pro uses a CR 2032 Lithium battery that preserves settings, such as the date
and time, when your Mac Pro is off. If you notice intermittent problems when your Mac
Pro starts up or changes in the date and time settings, you may need to replace the
battery.
Important: Dispose of the old battery according to your local environmental laws.
To replace the battery:
1 Open your Mac Pro and remove the side panel, following the instructions on page 28.
2 Remove any PCI Express cards that block access to the battery. See “Adding PCI Express
Cards” on page 47 for instructions.
Warning: If you remove a card and don’t install a replacement, place a port access
cover over the empty slot to keep foreign objects out of the enclosure. An uncovered
slot affects the airflow that cools the internal components and may cause damage.