Installing System Components 103NOTE: Filler brackets must be installed over empty expansion card slots tomaintain Federal Communications Commission (FCC) certification of thesystem and protect against electromagnetic interference. The brackets alsokeep dust and dirt out of the system and aid in proper cooling and airflowinside the system.7 Close the expansion card cover (see Figure 3-7).8 Replace the system cover (see "Installing the System Cover" on page 67).9 Reattach any peripherals you disconnected, then connect the system tothe electrical outlet.10 Turn on the system and attached peripherals.Installing a RAC CardCAUTION: Only trained service technicians are authorized to remove the systemcover and access any components inside the system. Before performing anyprocedure, see your Product Information Guide for complete information aboutsafety precautions, working inside the computer, and protecting againstelectrostatic discharge.1 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet and from the peripherals.2 Remove the system cover (see "Removing the System Cover" on page 66).3 Open the expansion card cover (see Figure 3-7).NOTE: You can remove the expansion card cover, if desired, and set it aside.4 Remove the filler bracket or existing expansion card from slot 1 to create acard-slot opening (see "Removing an Expansion Card" on page 93).NOTE: Keep the filler bracket in case you need to remove the expansion card.Filler brackets must be installed over empty expansion card slots to maintainFCC certification of the system and protect against electromagneticinterference. The brackets also keep dust and dirt out of the system and aid inproper cooling and airflow inside the system.5 Prepare the card for installation.6 Open the expansion card latch adjacent to the slot (see Figure 3-20).7 Insert the RAC card into expansion card slot 1 on the system board (seeFigure 6-1) and press down firmly (see Figure 3-20). Ensure that the card isfully seated in the guide slot.
