Hi,

You can download the Ethernet driver for your computer from: http://dell.to/ScPdwc

 Steps to download driver: 

• Click 'Download file' to download the list to a folder you will designate.
• Click 'Save'. Then designate the folder you would like to save the files to.
• Once you have designated the folder you would like to save your files to, Click 'OK'.
• In the Select the folder where you want to unzip the files to window, click OK.
• Double click on the downloaded driver and follow the prompts on screen to install driver. 
• Restart your computer.