is there a need for the Plugable USB 3.0 to 10/100/1000 Gigabit Ethernet Adapter if connecting a Surface Pro 3 to the Plugable UD3900

Hi Jan,

Thanks for posting your question here! Plugable UD-3900 has a Gigabit Ethernet port. Hence you would not require to connect a Plugable USB3-E1000 for wired Ethernet connectivity if Plugable UD-3900 is connected to the Surface Pro 3.

Hope the above information helps! If you need any additional information, please do feel free to shoot us an email at We are here to help!