Please follow the below instruction to prepare your rescue media for use with the Ethernet port on your Surface Pro 3 dock.

Step 1:

Visit: http://www.microsoft.com/en-gb/download/details.aspx?id=38826

Step 2:

Click on Download and select “Surface Gigabit Ethernet Adapter.zip”

Step 3:

Right click on the downloaded .zip file and select Extract All

Step 4:

Extract the contents of Surface Gigabit Ethernet Adapter.zip  to

“C:\boot\Macrium\Drivers\Network\spro”

Step 5:

Rebuild Rescue Media

When you boot into Windows PE the network adapter should be detected.

Alternatively.

Step 1:

Extract the contents of Surface Gigabit Ethernet Adapter.zip to the rescue media USB drive.

Step 2:

Within Windows PE open a command prompt and navigate using "CD" to the folder on your USB drive that contains the drivers.

Step 3:

Type drvload msu30x64w8a.inf and press return.

Your network adapter should now be detected.