How to Setup both Wired and Wireless Networks to work at same time on a Latitude System.


How to Setup both Wired and Wireless Networks to work at same time on a Latitude System.



This article provides information on why a wireless signal drops when a wired connection is made, stopping them from working at the same time on Latitude E3 / E4 systems.


Table of Contents:

  1. Latitude E3 / E4 system WIFI / 3G turns off automatically when LAN cables connected
  2. Why is this happening?
  3. How do we stop this from happening?

Latitude E3 / E4 system WIFI / 3G turns off automatically when LAN cables connected

On Latitude E3 / E4 systems. (The Exx20 and Exx30 Series.) The Wireless Local Area Network (WLAN) or Wireless Wide Area Network (WWAN) adapters will automatically shut off whenever a network cable is connected.

This may prevent you from setting up connection sharing, a bridge, or connecting to multiple networks simultaneously.


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Why is this happening?

The WLAN or WWAN adapter is disabled at the BIOS (Basic Input Output System) level when a network cable is plugged in.

There are no controls within Windows that will enable the adapter until the network cable is unplugged.

Intel wireless adapters may report that the radio switch is turned off even when the switch is physically in the on position.


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How do we stop this from happening?

Please follow the steps below:

  1. In the BIOS setup, under Power Management there is a section for Wireless Radio Control.

  2. You can get to the setup screens by pressing F2 or F12 as your system starts up.

    1. F2 will take you straight to the BIOS where your touchpad will let you navigate the screens.

    2. F12 will take you to a Boot once menu where you can select system setup, which will take you to the same place.

  3. When Wireless Radio Control is enabled, it will sense the connection of the system to a wired network and subsequently disable the selected wireless radios (WLAN and / or WWAN)

  4. The BIOS default setting is Enabled.

  5. You will need to set this to Disabled, click on Apply and then Save and Exit - to boot back to your operating system.

  6. This will allow you to have the Wired and a Wireless network active at the same time.

BIOS at wireless radio control screen

(Fig.1 BIOS at Wireless Radio Control Screen)

Note: If this doesn't resolve your issue please call in to your Local Technical Support Line for further help.


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Quick Tips content is self-published by the Dell Support Professionals who resolve issues daily. In order to achieve a speedy publication, Quick Tips may represent only partial solutions or work-arounds that are still in development or pending further proof of successfully resolving an issue. As such Quick Tips have not been reviewed, validated or approved by Dell and should be used with appropriate caution. Dell shall not be liable for any loss, including but not limited to loss of data, loss of profit or loss of revenue, which customers may incur by following any procedure or advice set out in the Quick Tips.

Article ID: SLN151679

Last Date Modified: 09/14/2019 03:33 AM

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