Dell Latitude D620 ATG - Manual (Page 26)

5. To install a WLAN card:
a. Move any antenna cables out of the way to make space for the WLAN card.
b. Insert the WLAN card into the system board connector at a 45-degree angle, and press the card into the metal securing tabs until you feel a click.
c. Connect the antenna cables to the WLAN card, ensuring that you route the cables correctly.
Mobile Broadband Network (WWAN) Card
If you ordered a Mobile Broadband network card with your computer, the card is already installed.
1. Follow the procedures in Before You Begin .
2. Remove the hinge cover (see Hinge Cover ).
1 WLAN card 2 metal securing tabs (2)
NOTICE: To avoid damaging the WLAN card, never place cables on top of or under the card.
1 WLAN card 2 system board connector 3 antenna cable connectors
NOTE: For more specific information about which cable to connect to which connector, see the documentation that came with your WLAN card.
NOTE: Mobile Broadband network cards may not be available in certain regions.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.