88 Installing System ComponentsNOTE: Ensure that the expansion-card bracket is also inserted into thesecuring slot at the bottom of the bracket slot.6 Close the expansion-card retainer. See Figure 3-14.7 Connect any internal or external cable(s) to the expansion card.8 Close the system. See "Installing the Top Cover" on page 60.Removing a PCI Express CardCAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not coveredby your warranty. Read and follow the safety instructions that came with theproduct.1 Remove power from the system and attached peripherals, and disconnectthe system from the electrical outlet.2 Open the system. See "Removing the Top Cover" on page 60.3 Disconnect any internal or external cable(s) that are connected to theexpansion card.4 Open the expansion-card retainer adjacent to the slot. See Figure 3-14.5 Press the card latch away from the expansion card, grasp the card, andcarefully lift it from the system-board connector.6 If you are permanently removing the card, replace the metal filler bracketover the empty card-slot opening.7 Close the expansion-card retainer. See Figure 3-14.8 Close the system. See "Installing the Top Cover" on page 60.Optical DriveThe system accommodates one optical drive. The device is not hot-pluggable,so the system must be powered down and the power cords removed from thechassis before installing or removing this drive.Removing the Optical Drive1 Remove power from the system and attached peripherals, and thendisconnect the system from the electrical outlet.