Dell 14" Mobile Precision 3470 Mobile Workstation (Silver) - Manual (Page 20)

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
Antenna-cable color Silkscreen marking
Main White MAIN △ (white triangle)
Auxiliary Black AUX ▲ (black triangle)
2. Align the notch on the wireless card with the tab on the wireless-card slot on the system board.
3. Slide and insert the wireless card at an angle into the wireless-card slot on the system board.
4. Align the screw hole on the wireless-card bracket to the screw hole on the wireless card and system board.
5. Tighten the single (M2x3.5) screw that secures the wireless-card bracket to the wireless card and the system board.
Next steps
1. Install the microSD card .
2. Install the base cover .
3. Follow the procedure in After working inside your computer .
20 Removing and installing components