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If your card includes a retention mechanism, remove the top of the retention mechanism by pressing the tab and pulling up on the top. Gently pull the securing tab, grasp the card by its top corners, and then ease it out of its connector. 4. Prepare the card for installation. See the documentation that came with the card for information on configuring the card, making internal connections, or otherwise customizing it for your computer. 5. If you are installing the card into the x16 card connector, position the card so the securing slot is aligned with the securing tab, and gently pull the securing tab. 6. Place the card in the connector and press down firmly. Ensure that the card is fully seated and that the bracket is within the card slot. 7. If you replaced a card that was already installed in the computer and you removed the top of the retention mechanism, you may reinstall the top. 8. Secure the card bracket with the screw you removed in step 2. CAUTION: Some network adapters automatically start the computer when they are connected to a network. To guard against electrical shock, be sure to unplug your computer from its electrical outlet before installing any cards. NOTICE: Do not route card cables over or behind the cards. Cables routed over the cards can prevent the computer cover from closing properly or cause damage to the equipment. 9. Connect any cables that should be attached to the card. See the documentation for the card for information about the card's cable connections. 10. Close the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on. 11. If you installed a sound card: a. Enter system setup, select Audio Controller, and then change the setting to Off. b. Connect external audio devices to the sound card's connectors. Do not connect external audio devices to the microphone, speaker/headphone, or line-in connectors on the back panel. 12. If you installed an add-in network adapter and want to disable the integrated network adapter: a. Enter system setup, select Network Controller, and then change the setting to Off. b. Connect the network cable to the add-in network adapter's connectors. Do not connect the network cable to the integrated connector on the back panel. 13. Install any drivers required for the card as described in the card documentation. Removing a PCI Express Card 1. Follow the procedures in "Before You Begin." 2. If necessary, disconnect any cables connected to the card. 3. If your card includes a retention mechanism, remove the top of the retention mechanism by pressing the tab and pulling up on the top. 4. Remove the securing screw from the card bracket. 5. Gently pull back the securing tab, grasp the card by its top corners, and then ease it out of its connector. 6. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell (see the Owner's Manual). 7. Close the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on. 8. Remove the card's driver from the operating system. 9. If you removed a sound card: a. Enter system setup, select Audio Controller, and then change the setting to On. b. Connect external audio devices to the audio connectors on the computer back panel. 10. If you removed an add-in network connector: a. Enter system setup, select Network Controller, and then change the setting to On. b. Connect the network cable to the integrated connector on the computer back panel. 11. Install any drivers required for the card as described in the card documentation. Front Panel NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the computer. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer. NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the computer. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover. Removing the Front Panel 1. Follow the procedures in "Before You Begin." 2. Remove the computer cover. 3. Release and remove the front panel: a. If your computer has a release lever, push the release lever to release the top tab. b. Reach inside the computer and push the top and bottom tab towards you to release them. c. Rotate the front panel to separate it from the side hinges. Removing the Front-Panel Insert 1. Press in the two insert tabs. 2. Push out the front-panel insert. Reattaching the Front Panel 1. Reattach the front panel to the side hinges. 2. Rotate the front panel until it snaps onto the front of the computer. Drives Your computer supports a combination of the...