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Use this guide to disconnect the WLAN card wires in your Dell Latitude 7490.
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Unplug all cables and fully shut down your laptop.
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Flip your laptop over so the rubber feet strips are facing up.
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Use a Phillips screwdriver to fully loosen the eight captive screws securing the back cover.
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Insert the long side of an opening pick between the top right corner of the back cover and frame.
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Pry the back cover up to release the clips securing the top right corner.
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Slide the opening pick down the right edge and around the bottom right corner to release the clips.
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Slide the opening pick along the front edge and up to the top left corner to release the remaining clips securing the back cover.
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Remove the back cover.
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Grip the plastic tab on the battery connector and pull straight up to disconnect it.
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crwdns2935267:0crwdne2935267:0Tweezers$4.99
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Use a Phillips screwdriver to remove the 3.5 mm‑long screw securing the WLAN card and its bracket.
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Use tweezers or your fingers to remove the WLAN card bracket.
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Insert an arm of your angled tweezers under the metal neck of one the WLAN card's coaxial connectors.
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Gently lift as close to the head as possible to disconnect the cable.
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Repeat the process for the second antenna cable.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
