Dell Vostro 1500 (Mid 2007) - Manual (Page 48)

4. Disconnect the two antenna cables from the WWAN card.
5. Release the WWAN card by pushing the metal securing tabs toward the back of the computer until the card pops up slightly.
6. Lift the WWAN card out of its system board connector.
1 captive screws (2) 2 cover
1 antenna cable connectors (2) 2 WWAN card