migration assistant from windows to mac using Ethernet cable

I have just bought a year old MacBook Pro and have been trying to transfer date from my windows laptop to the mac using the migration assistant.

The first time I tried this process it tried to do it via wifi and the information message stated it would take 28+ hours, but the connection was lost after a few hours and the process stopped.

I would like to restart this using an Ethernet cable from the windows laptop to the mac, but when migration assistant starts it automatically defaults to wifi and doesn't give me an option of choosing to use an Ethernet cable.

How can I force it to use this cable? Because it will take too long by using wifi.