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Figure 11. Inside a Four-Processor System
1. heat sink for processor 4
2. DIMMs (24)
3. heat sink for processor 3
4. processor expansion module
Processor Expansion Module
A processor expansion module (PEM) is present only in systems with four processors.
Removing the Processor Expansion Module
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your
warranty. Read and follow the safety instructions that came with the product.
CAUTION: Do not lift the processor expansion module by grasping a memory module or heatsink.
1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet. When
disconnected from the power source, press and hold the power button for three seconds to fully drain the system
of stored power prior to removing the cover.
2. Open the system.
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