Dell GX280DT User Guide - Page 166

After you open and close the cover, the chassis intrusion detector, if installed and enabled, causes the following message to appear on the screen at the next computer start-up: ALERT! Cover was previously removed. 10. Reset the chassis intrusion detector by changing Chassis Intrusion to On or On-Silent. NOTE: If an admin password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector. 11. Remove the card's driver from the operating system. 12. If you removed a sound card: a. Enter system setup, select Audio Controller, and change the setting to On. b. Connect external audio devices to the audio connectors on the computer back panel. 13. If you removed an add-in network connector: a. Enter system setup, select Network Controller, and change the setting to On. b. Connect the network cable to the integrated connector on the computer back panel. PCI Express Cards Depending on your purchase, your computer supports one PCI Express x16 card and may support one PCI Express x1 card. 1 PCI Express x16 card 3 PCI Express x1 card slot 2 PCI Express x1 card 4 PCI Express x16 card slot If you are installing or replacing a PCI Express x16 card, see "Installing a PCI Express x16 Card," or if you are removing the card, see "Removing a PCI Express x16 Card." If you are installing or replacing a PCI Express x1 card, see "Installing a PCI Express x1 Card," or if you are removing the card, see " Removing a PCI Express x1 Card." If you are replacing either type of PCI Express card, remove the current driver for the card from the operating system. Installing a PCI Express x16 Card 1. Follow the procedures in "Before You Begin." 2. If you replacing a PCI Express x16 card, remove the installed card: a. Press the indented tab on the hinged lever with your thumb until you release the tab. Continue holding the lever and pull the lever up.