Removing and Installing Parts 103Installing the Processor Airflow Shroud1 Attach both fan power cables to the connectors on the system board.2 Align the anchor tabs with the securing slots.3 Gently press the shroud until the anchor tabs snap securely into place.4 Close the computer cover.NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it intothe computer.5 Connect your computer and devices to electrical outlets, and turn them on.ProcessorRemoving the ProcessorNOTICE: Do not perform the following steps unless you are familiar with hardware removaland replacement. Performing these steps incorrectly could damage your system board. Fortechnical service, see "Dell Technical Support Policy (U.S. Only)" on page 129.CAUTION: Before you begin any of the procedures in this section, follow the safety instructionslocated in the Product Information Guide.1 Follow the procedures in "Before You Begin" on page 67.2 Disconnect the cooling fan power cable from the REAR FAN1 connector (see "System BoardComponents" on page 75) on the system board.3 Disconnect the power cable from the 12V PWR connector (see "System Board Components"on page 75) on the system board.4 Lift up the airflow shroud.