3. Open the system.4. Align the two notches on the metal standoffs with the slots on the side of the optical drive.5. Slide the optical drive into the notches until it is seated firmly and the release latch snaps into place.6. Connect the power cable.7. Connect the data cable to the back of the drive and to the SATA connector on the system board.NOTE: Route and secure the cables using the cable routing latch on the system chassis to prevent them frombeing pinched or crimped.8. Close the system.9. If applicable, install the front bezel.10. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.Cooling FansYour system supports:• Four cooling fans in a non-redundant power supply configuration.• Five cooling fans in a redundant power supply configuration.NOTE: Fan 1 must be installed in a redundant power supply configuration.NOTE: Hot-swap removal or installation of the fans is not supported.NOTE: In the event of a problem with a particular fan, the fan number is referenced by the system’s managementsoftware, allowing you to easily identify and replace the proper fan by noting the fan numbers on the coolingshroud.Removing A Cooling FanWARNING: Opening or removing the system cover when the system is on may expose you to a risk of electricshock. Exercise utmost care while removing or installing cooling fans.CAUTION: Many repairs may only be done by a certified service technician. You should only performtroubleshooting and simple repairs as authorized in your product documentation, or as directed by the online ortelephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by yourwarranty. Read and follow the safety instructions that came with the product.CAUTION: Do not operate the system with the cover removed for a duration exceeding five minutes.NOTE: The procedure for removing each fan is identical.1. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet.2. Open the system.3. Remove the cooling shroud or power distribution board shroud as applicable.4. Disconnect the fan's power cable from the power cable connector on the system board or power distribution boardas applicable.5. Lift the fan out of the cooling-fan bracket.62