I could just be forgetting a step, but I haven't found an answer through any other questions
I received my alfa AWUS036NEH from Hakshop about a week ago. I installed Kali in a VirtualBox virtual machine and have tried using the Alfa on a few test networks. (A Linksys, an Arris, and Netgear routers)
I connect the Alfa to the virtual machine and it appears in lsusb and I can see it with Airmon-ng as wlan0.
Starting airmon-ng on wlan0 returns monitor mode on mon0. Airmon-ng does list three running processes as possible issues. I have stopped one at a time and then all three without any differe