Right, the QC Pro USB dosen't have a Mic. Are you saying that the Mic option is missing or you can't select it. How about in other application, can you see & select the Mic option?
I have this model and I gave up on it. The driver / software is junk. The only thing I can do with it is take snap shot. Any time I try to use the Moive feature I get an error the the "device can't be found"
IMHO, return it if you can. I wish I could.