Dell 14" Mobile Precision 3470 Mobile Workstation (Silver) - Manual (Page 19)

Steps
1. NOTE: When removing the wireless card from the computer, if the adhesive pad which helps secure the wireless
card in place is removed from the computer along with the WLAN card, adhere it back to the computer.
Loosen the single (M2x3.5) screw that secures the wireless-card bracket to the wireless card and system board.
2. Remove the wireless-card bracket from the wireless card.
3. Disconnect the antenna cables from the wireless card.
4. Slide and remove the wireless card from the wireless-card slot.
Installing the wireless card
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicate the location of the wireless card and provides a visual representation of the installation procedure.
Removing and installing components 19