Dell OptiPlex Small Form Factor 7020 Owner's Manual page 95

2. Remove the side cover.
3. Remove the front bezel.
4. Remove the 3.5-inch hard
5. Remove the disk-drive
6. Remove the processor fan and heat-sink
About this task
The following images indicate the location of the serial module and provide a visual representation of the removal procedure.
Figure 48. Removing the serial module
Steps
1. Remove the two screws (M3) that secure the serial module to the chassis.
2. Disconnect the serial-module cable from its connector (KB MS, SERIAL) on the system board.
3. Lift the serial module off the system board.
Installing the serial module
CAUTION: The information in this removal section is intended for authorized service technicians only.
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following images indicate the location of the serial module and provide a visual representation of the installation procedure.
drive, if applicable.
cage.
assembly.
Removing and installing Field Replaceable Units (FRUs)
Restricted - Confidential
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