Dell OptiPlex 5400 Service Manual page 45

Steps
1. Connect the antenna cables to the wireless card.
The following table provides the antenna-cable color scheme:
Table 2. Antenna-cable color scheme
Connectors on the
wireless card
Main
Auxiliary
NOTE: The antenna cables are preinstalled in your computer at the point of sale, even if you have obtained the
computer without the WLAN card.
2. Place the wireless-card bracket on the wireless card.
3. Align the notch on the wireless card with the tab on the wireless-card slot.
4. Slide the wireless card at an angle into the wireless-card slot.
5. Replace the screw (M2x2.5) to secure the wireless card and wireless-card bracket to the display-assembly base.
6. Align and place the wireless-card shield on the system board and wireless card.
7. Replace the two screws (M2x2.5) to secure the wireless-card shield to the system board.
8. Route the antenna cables through the routing guides on the wireless-card shield.
Next steps
1. Install the system-board
2. Install the back cover.
Antenna-cable color
White
Black
shield.
Silkscreen marking
MAIN
AUX
△ (white triangle)
▲ (black triangle)
Removing and installing components 45