This is a revision after 4 weeks.  In addition to the USB port not working the WIFI keeps dropping on a pretty regular basis.  I am somewhat tech savvy and tried everything to fix it but still dropping.  Can't expect the wife to put up with this.  I am returning it and trying a replacement - what a hassle.  Overall performance is great stays cool and a nice machine. I like the computer but, one of the front USB 3.0 Ports does not work. I had to order a separate USB hub to make sure I have enough ports. Not happy about the condition but since I had taken the time to set up Windows and my wife is happy with it I'm keeping it not worth sending back, I in might get another bad item. In general the refurb was pretty good. Too bad it couldn't have been done correctly.