Removing and Installing Parts 613 Remove the securing screw from the card bracket.4 Grasp the card by its top corners, and ease it out of its connector.5 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 page 94).NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of thecomputer. The brackets also keep dust and dirt out of your computer.NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into thecomputer.6 Close the computer cover, reconnect the computer and devices to electrical outlets, and then turnthem on.7 Remove the card’s driver from the operating system.8 If you removed a sound card:a Enter system setup (see page 82), select Audio Controller, and then change the setting to On.b Connect external audio devices to the audio connectors on the computer back panel.9 If you removed an add-in network connector:a Enter system setup (see page 82), select Network Controller, and then change the setting to On.b Connect the network cable to the integrated connector on the computer back panel.Front PanelCAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in theProduct Information Guide.CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet beforeopening the cover.