Dell OptiPlex Tower 7010 Owner's Manual page 80

Steps
1. Remove the (M2x3.5) screw that secures the wireless card bracket to the system board.
2. Slide and lift the wireless card bracket away from the wireless card.
3. Disconnect the antenna cables from the connectors on the wireless card.
4. Gently pull the internal antenna cable out from the hole on the chassis.
5. Remove the internal antenna cable from the routing guides on the chassis
6. Remove the two screws (M3x3) that secure the internal antenna to the chassis.
7. Remove the internal antenna assembly from the chassis.
Installing the internal antenna kit
CAUTION: The information in this 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 internal antenna and provides a visual representation of the installation
procedure.
80 Removing and installing Field Replaceable Units (FRUs)