Hello, On picture 3 you can see better what it is: A USB extension so that you don't have to connect the wifi stick directly to a USB port, as the stick is quite big. This is not necessary in any case, but it helps anyway. Short do-gooder on the side: however, this is not a modem.

Good day ... that's exactly how it is :-) ... Driver is supplied on CD, the part works perfectly, very good range and is very fast ;-) Greetings, Dani

Yes, with the manufacturer.

Tested it: https://github.com/aircrack-ng/rtl8812au With this driver it works!

The stick has an RTL8812AU chipset. For this chipset, there are now drivers from the community that supposedly provide PI support.

I don't see why. They already have wifi...

Good evening, no because it is a network card in some sorts, just to plug on the usb and to you the wifi ;)