1

captive screws (2)

2

cover

 

 

 

 

4. Disconnect the two antenna cables from the WWAN card.

1

antenna cable connectors (2)

2

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.

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Dell 1721 manual