Dell Dimension 9100 Service Manual page 15

NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your
computer's electronic components. You can do so by touching an unpainted metal surface on the computer.
Your Dell™ computer provides the following slots for PCI and PCI Express cards:
Three 33-MHz PCI card slots
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One PCI Express x1 card slot
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One PCI Express x16 card slot
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One PCI Express x4 card slot
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Removing and Installing PCI and PCI Express Cards
NOTE: Dell offers an optional customer kit for Audigy II and IEEE 1394 PCI add-in-cards that includes a front-mounted IEEE 1394 connector.
1. If you are replacing a card, remove the current driver for the card from the operating system.
2. Follow the procedures in "Before You
3. Remove the computer cover.
4. Push the two release tabs on the card retention door from the inside to pivot the door open. Because the door is captive, it will remain in the open
position.
Begin."