I do not understand how this possibly can be misunderstood. Since you obviously have an internal wireless card, the Broadcom card, and you wish to install ndiswrapper for your Alfa card you naturally have to choose the correct card. When you start auto-NDISwrapper with your Alfa plugged in both cards will be detected and the script will ask you to specify which one is the target card. This is where you need to choose u for your Alfa, which is connected through USB.
Also, no need to add extra empty lines to each of your posts, this thread is getting long enough even without that.




