Cards 3511 Connect your computer and devices to electrical outlets, and then turnthem on.12 Uninstall the driver for the card that you removed.NOTE: If you removed a sound card or a network adapter, see "NetworkAdapter and Sound Card Settings" on page 43.Installing PCI and PCI Express CardsNOTICE: To avoid electrostatic discharge and damage to internal components,ground yourself by using a wrist grounding strap or by periodically touching anunpainted metal surface on the computer chassis.NOTICE: If you have or are upgrading to the optional dual-graphics configuration,see "Installing a PCI Express Graphics Card in a Dual Configuration" on page 40 toinstall a graphics card.1 Follow the procedures in "Before You Begin" on page 9.2 Remove the computer cover (see "Replacing the Computer Cover" onpage 119).3 Press down the tab on the top of the card retainer at the appropriate cardslot and pivot the card retainer back through the chassis wall.4 Remove the filler bracket or existing card (see "Removing PCI and PCIExpress Cards" on page 32) to create a card-slot opening.5 Prepare the card for installation.See the documentation that came with the card for information onconfiguring the card, making internal connections, or otherwisecustomizing it for your computer.NOTE: If the card is full-length, pull back on the alignment guide release tab toremove the alignment guide from the card fan cage.6 Position the card so that it is aligned with the slot and the securing tab (ifpresent).NOTE: If the card is full-length, insert the card guide into the alignment slot onthe card fan cage.