Attach the bracket to the new drive by aligning the screw holes on the drive with the screw holes on the bracket rails and then inserting and tightening all four screws (two screws on each rail). See the diagram. 6. Gently slide the drive into place until the tabs securely click into position. 7. Connect the power and CD/DVD drive cables to the drive. If you are adding a drive that has an audio cable, connect the audio cable to the audio connector on the audio card. 8. If you are installing a new CD/DVD drive rather than replacing a drive, remove the front-panel inserts. From inside the drive bay, gently press on each side of the insert until it pops out. 9. If you are installing a drive that has its own controller card, install the controller card in an expansion slot. See the documentation that accompanied the drive and controller card to verify that the configuration is correct for your computer.. 10. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents. 11. Close the computer cover. 12. Connect your computer and devices to electrical outlets, and turn them on. See the documentation that came with the drive for instructions on installing any software required for drive operation. Microprocessor Airflow Shroud Removing the Microprocessor Airflow Shroud 1. Follow the instructions in "Before You Begin." 2. Open the computer cover. 3. Press down and back on the indentations at the top corners of the shroud. The top anchor tabs disengage from the anchor slots. 4. Lift the airflow shroud out of the chassis. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in your Owner's Manual. Installing the Microprocessor Airflow Shroud 1. Follow the instructions in "Before You Begin." 2. Open the computer cover. 3. Insert the bottom anchor tabs into the anchor slots. 4. Align and insert the side anchor tabs into the anchor slots. 5. Press the indentations until the top anchor tabs on the shroud snap securely into place. 6. Close the computer cover. 7. Connect your computer and devices to electrical outlets, and turn them on. Microprocessor Installing the Microprocessor 1. Follow the instructions in "Before You Begin." 2. Open the computer cover. 3. Remove the microprocessor airflow shroud. If you are replacing a microprocessor, see "Removing the Microprocessor." 4. If the release lever is not extended to the release position, move it to that position. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in your Owner's Manual. NOTE: It is recommended that only a technically knowledgeable person perform this procedure. CAUTION: The processor can get very hot during normal operation. Ensure that the processor has had sufficient time to cool before you touch it. NOTICE: You must position the microprocessor correctly in the socket to avoid permanent damage to the microprocessor and the computer. 5. Align pin-1 (the imprinted corner) of the microprocessor and pin-1 of the socket. 6. Carefully set the microprocessor in the socket and press it down lightly to seat it. 7. Rotate the release lever back toward the system board until it snaps into place, securing the microprocessor. 8. Remove the thermal grease protective cover and place the heat sink in the base. 9. Place one end of the heat sink under the tab on the retention module on the side opposite the lever. Lower the heat sink onto the microprocessor so that the heat sink fits securely under the tab on the other end of the retention module. 10. Replace the retention module clip. 11. If you installed a microprocessor replacement kit from Dell, return the original heat sink assembly and microprocessor to Dell in the same package in which your replacement kit was sent. 12. Replace the airflow shroud. 13. Close the computer cover. 14. Connect your computer and devices to electrical outlets, and turn them on. Removing the Microprocessor 1. Follow the instructions in "Before You Begin." 2. Open the computer cover. 3. Remove the microprocessor airflow shroud. 4. Remove the microprocessor heat sink: a. Remove the retention module clip by pressing in on the tab and lifting the retention module clip up. b. Pull the release lever out until the heat sink is released. c. Lift the heat sink away from the microprocessor. NOTICE: Microprocessor pins are delicate. To avoid damage, ensure that the microprocessor aligns properly with the socket, and do not use excessive force when you install the processor. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. NOTE: It is recommended that only a technically knowledgeable person perform this procedure...