OptiPlex 7490 All-In-One Service Manual

Installing the wireless card

If you are replacing a component, remove the existing component before performing the installation procedure.

CAUTION To avoid damage to the wireless card, route the antenna cables accurately.

The following image indicates the location of the wireless card and provides a visual representation of the installation procedure.

Image: Installing the wireless card

Connect the antenna cables to the wireless card.

The following table provides the antenna-cable color scheme:

Table 1. Antenna-cable color schemeThe following table provides the antenna-cable color scheme for the wireless card of your computer.
Connectors on the wireless card	Antenna-cable color	Silkscreen marking
Main	White	MAIN	△ (white triangle)
Auxiliary	Black	AUX	▲ (black triangle)

Place the wireless-card bracket on the wireless card.
Align the notch on the wireless card with the tab on the wireless-card slot.
Slide the wireless card at an angle into the wireless-card slot.
Replace the screw (M2x2.5) to secure the wireless card and wireless-card bracket to the display-assembly base.
Align and place the wireless-card shield on the system board and wireless card.
Replace the two screws (M2x2.5) to secure the wireless-card shield to the system board.
Route the antenna cables through the routing guides on the wireless-card shield.