something else here I found (and tried out)
Look back in Device Manager and find adapter in the list of yellow marked devices, right click it and go to Properties then click the Details tab then under Property box, down arrow and choose: HardwareIDs.
Take a note of the four characters which follow VEN for Vendor and the four after DEV for Device and input them at click here and again hopefully you'll get some info.
for example mine is PCI\VEN8086&DEV109A&SUBSYS_xxxxxxx and putting in 109A in the Device search box tells me it's
0x109A Intel PRO/1000 PL Network Adaptor 0x8086 Intel Corporation