54 Removing and Installing Partsw w w . d e l l . c o m | s u p p o r t . d e l l . c o m 11 Replace the computer cover (see page 68).NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it intothe computer.12 Connect your computer and devices to electrical outlets, and turn them on.13 Install any drivers required for the card as described in the card documentation.Adding a Floppy DriveCAUTION: Before you begin any of the procedures in this section, follow the safety instructions in theProduct Information Guide.1 Shut down the computer through the Start menu (see page 18).2 Ensure that your computer and attached devices are turned off. If your computer andattached devices did not automatically turn off when you shut down your computer, turnthem off now.NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug itfrom the network wall jack.3 Disconnect any telephone or telecommunication lines from the computer.4 Disconnect your computer and all attached devices from their electrical outlets, and thenpress the power button to ground the system board.CAUTION: To guard against electrical shock, always unplug your computer from the electrical outletbefore opening the cover.5 Remove the computer cover (see page 49).6 Release and remove the front panel:a Push the release lever to release the top tab.b Reach inside the computer and push the bottom tab towards you to release it (the middletab releases automatically).c Rotate the front panel to separate it from the side hinges.