Dell OptiPlex GX1 Service Manual page 91

To take advantage of future options in processor speed and functionality, you
can replace the microprocessor on your system board with any Dell-supported
microprocessor upgrade. The microprocessor upgrade kit is shipped with an
SEC cartridge/heat sink assembly, which includes the microprocessor, micro-
processor heat sink, and L2-cache memory module.
You may also have to reseat or replace an SEC cartridge/heat sink assembly
during normal maintenance.
SEC cartridge
release latches (2)
SEC cartridge
Removing and Replacing Parts on the Low-Profile Chassis
heat sink
securing clips (2)
guide bracket assembly
metal standoffs (2)
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