support.dell.com Installing System Board Options 8-13
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Each microprocessor is contained within a single-edge contact (SEC) cartridge and
heat sink assembly. The system board has four guide-bracket assemblies, which hold
the SEC cartridge and heat sink assemblies. If your system has only one microproces-
sor, the remaining guide-bracket assembly connectors must contain terminator cards.
If you add additional microprocessors to the system, th e microprocessors' internal
operating speeds must match that of the primary microprocessor.
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To remove a terminator card, perform the following steps.
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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.
DIMM socket ejectors (2)