Dell OptiPlex G1 Reference And Installation Manual page 107

The microprocessor upgrade kit includes a single-edge contact (SEC) cartridge with
heat sink assembly. An airflow shroud is also included with certain types of
microprocessors.
The following procedure describes how to replace the microprocessor.
NOTE: Dell recommends that only a technically knowledgeable person perform this
procedure.
If the microprocessor connector is surrounded by a guide-bracket assembly with-
out tabs (see Figure 6-10), continue to step 5.
If the microprocessor connector is surrounded by a guide-bracket assembly with
tabs at the top (see Figure 6-11), skip to step 7 .
Grasp the SEC cartridge firmly, and pull straight up on the cartridge to remove it
from the guide-bracket assembly. You must use up to 15 pounds of force to dis-
engage the SEC cartridge from the connector.
Skip to step 8.
Installing System Board Options 6-13