content: USB controllers are essentially just one embedded device in your PC talking to another embedded device inside your accessory. If you rewrite the firmware of either the accessory or PCs USB controller (you'd be surprised how easily it can be done) you can quite easily compromise an OS without having to run any software on the OS. Its still silly as fuck to disable the entire computer because of a potential compromise but its a lot more sensible then to allow who knows what on the embedded controller to run amok. The better option would have been to disable the controller in the BIOS but fuck knows what Google engineers are thinking about, googles humming bird project still pisses me off 3 years after its launch by returning stupidly irrelevant "themed results" because of partially related words and utterly innocuous components of the search so I can totally believe that some pseudo smart software or hardware engineer thought that binning a computer after such a compromise is the best solution.  Case in motherfucking point