4 ContentsReplacing the Theater Lighting Card . . . . . . . . . . 206 Replacing Memory Module(s) . . . . . . . . 237 Replacing a PCI/PCI Express Card . . . . 27Removing a PCI Express Graphics Card From aMulti Graphics Card Configuration . . . . . . . . . . . 28Installing Graphics Cards for Multi Graphics Card . . . 31Replacing the PCI and PCI Express Cards . . . . . . . . 358 Replacing Drives . . . . . . . . . . . . . . . . . . 43Replacing a Hard Drive . . . . . . . . . . . . . . . . . 43Replacing the Drive Panel . . . . . . . . . . . . . . . . 51Replacing a Floppy Drive (XPS 730 Only) . . . . . . . . 53Replacing a Media Card Reader . . . . . . . . . . . . . 629 Replacing the Heat Sink Assembly . . . . 67Replacing the Air Cooled Heat Sink Assembly . . . . . 67Replacing the Liquid Cooling Heat Sink Assembly . . . 6910 Replacing the Processor . . . . . . . . . . . . 73Removing the Processor . . . . . . . . . . . . . . . . . 74Installing the Processor . . . . . . . . . . . . . . . . . 75