Dell GX280DT User Guide - Page 104

9. If applicable, before replacing the card retention mechanism, ensure that: l The tops of all cards and filler brackets are flush with the alignment bar. l The notch in the top of the card or filler bracket fits around the alignment guide. 10. Snap the card retention mechanism into place, securing the card(s) in the computer. 1 card retention latch 2 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. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. 11. Connect any cables that should be attached to the card. See the documentation for the card for information about the card's cable connections. 12. Close the computer cover, reconnect the computer and devices to electrical outlets, and turn them on. 13. If you installed a sound card: a. Enter system setup, select Audio Controller, and 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. 14. If you installed an add-in network adapter and want to turn off the integrated network adapter: a. Enter system setup, select Network Controller, and 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. 15. 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. Gently push the release tab on the card retention latch from the inside to pivot the latch open. Because the latch is captive, it will remain in the open position. 3. Use the card retention mechanism to secure the card in place from the top: a. Place your thumb on the top of the card retention mechanism and grip the bottom of the retention mechanism with your fingers. b. With your free hand, gently squeeze the sides of the retention mechanism to release it from the tab slots holding it in place. c. Pivot the retention mechanism upward to release it from the two tab slots. d. Set the retention mechanism aside in your work area.