Hi Shakecip,
The best way to identify the unknown device, is to right-click on the item, select Properties, click on the Details tab, then on the Property menu select Hardware IDs. Now you will see in the window below that showing at least (1) string of characters (example = "PCI\VEN_10EC&DEV_8169&SUBSYS_1045147B&REV_10"). Right-click on what is listed first, select copy, now paste it to your browser search engine of choice. The search results should point you in the right direction in identifying the unknown device.
You can paste/provide the string of characters here in a reply and we'll help in identifying the unknown device, but it will need to be exact if typing it in here like the example I have provided above.
I hope this helps.