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See the documentation for the card for information about the card's cable connections. NOTICE: Before rotating the card retainer back into place, ensure that the tops of all cards and filler brackets are flush with the alignment bar and the notch in the top of each card or filler bracket fits around the alignment guide. 10. Rotate the card retainer back into its original position; push its tip so that its tab clicks into place. 11. If present, lower the card retention device that lays over the installed cards and snap it into place. NOTICE: To connect a network cable, first plug the cable into the network port or device and then plug the cable into the computer. 12. Replace the computer cover (see Replacing the Computer Cover), reconnect the computer and devices to electrical outlets, and then turn them on. 13. Install any drivers required for the card as described in the card documentation. NOTE: If you installed a sound card or a network adapter, see Network Adapter and Sound Card Settings. Removing a PCI Express Graphics Card from a Dual Configuration NOTE: This section regards dual configurations of PCI Express x16 graphics cards only. For removal of any other type of PCI or PCI Express cards, see Removing PCI and PCI Express Cards. 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. If present, press the tab on the card retention device that lays over the installed cards and rotate it upwards to gain full access to the card. 4. Gently securing both graphics cards with one hand, remove the graphics card bridge (if present) with your other hand by pulling it up and away from the computer. Set it aside. 1 graphics card bridge 2 power connectors (2) 3 dual-PCI Express graphics cards 5. Disconnect any cables connected to the card. 6. Press down the tab on the top of the card retainer at the appropriate card slot and pivot the card retainer back through the chassis wall. 1 release tab 2 card retainer 3 alignment guide 4 fan bracket 7. Press the release tab (if present) on the system board connector as you grasp the card by its top corners, and then ease the card out of the connector. NOTE: If the card is full-length, press the release tab on the end of the alignment guides on the fan bracket. 1 PCI Express x16 card 2 securing tab 3 PCI Express x16 card slot 8. Install a filler bracket in the empty card-slot opening. If you are replacing the card, see Installing a PCI Express Graphics Card in a Dual Configuration. 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. NOTE: The graphics card bridge (not present in all dual-graphics configurations) is not necessary in a single graphics card configuration. NOTICE: Before rotating the card retainer back into place, ensure that the tops of all cards and filler brackets are flush with the alignment bar and the notch in the top of each card or filler bracket fits around the alignment guide. 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. Rotate the card retainer back into its original position; push its tip so that its tab clicks into place. NOTICE: To connect a network cable, first plug the cable into the network port or device and then plug the cable into the computer. 10. If present, lower the card retention device that lays over the installed cards and snap it into place. 11. Replace the computer cover (see Replacing the Computer Cover), reconnect the computer and devices to electrical outlets, and then turn them on. Installing a PCI Express Graphics Card in a Dual Configuration NOTE: To upgrade to or downgrade from a dual-graphics configuration, you will need additional parts that can be ordered from Dell (see Contacting Dell). This section pertains to dual PCI Express graphics card configurations only. For installation of other types of PCI or PCI Express cards, see Installing PCI and PCI Express Cards. The PCI Express x1 card slot is not available for use if a graphics card is installed in each of the PCI Express x16 card slots in a dual graphics card configuration. If you are upgrading from a single graphics card to a dual-graphics card configuration, you will need to remove any card installed in the PCI Express x1 card slot (see System Board Components to locate the PCI Express x1 card slot). To remove a PCI Express card, see Removing PCI and PCI Express Cards. NOTICE: For information about upgrading your system to use dual-graphics technology, see the Dell website at support.dell.com. To learn more about dual-graphics technology, see "Understanding Dual Graphics Technology" in your Owner's Manual. 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. If present, press the tab on the ca...