support.dell.com Installing System Board Options 8-15
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1. Shut down the system, including any attached peripherals, and disconnect the
system from the electrical outlet.
2. Open the panel doors on top of the computer.
See Accessing the Interior of Your System in Chapter 7.
3. Pull the tabs on each side of the guide bracket away from the ends of the cartridge,
and then lift the cartridge and heat sink assembly away from the guide-bracket
assembly (see Figure8-9).

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To install a replacement SEC cartridge and heat sink assembly, perform the following
steps:
1. Remove the terminator card or old SEC cartridge from the guide-bracket assembly.
2. Slide the SEC cartridge into the guide-bracket assembly, and firmly seat the
assembly until the tabs on the guide-bracket assembly snap into place over the
ends of the cartridge.
3. Close the panel doors.
tabs (2)
guide-bracket assembly
heat sink
SEC cartridge