Flickering and repeated devices in Device Manager

[Marcp]

Hello-

I have a Lenovo X1 Carbon with the Lenovo USB 3.0 Dock. I noticed mild flickering on attached monitor, and via the Lenovo website downloaded the most recent drivers and firmware to update my system.

I have now noticed that two items appear in the USB Display Adapter section of the Device Manager (see picture):
Thinkpad USB 3.0 Dock
DisplayLink Display Adapter (4302)

Is this a problem? I still have the flickering, by the way.

Thank you,

Marc