Dell OptiPlex 790 (Early 2011) - Manual (Page 47)

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Wireless Module
Removing the Wireless Module
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover .
3. Remove the front bezel
4. Remove the drive cage .
5. Disconnect the cables from the wireless local area network (WLAN) card.
6. Push the securing levers away from the WLAN card.
7. Remove the WLAN card.
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