migmjt

We have 30 of these and they do exactly the same thing. They've always had this problem. The side ports will fail then about a week later they work again. We have to keep swapping to the front ports (not the middle one for some reason). They keyboards and mice are ok though so they haven't been damaged (obviously students pull keys off buts that's a different issue). Weirldy, USB sticks do work on the ports where keyboards and mice fail. A Stone engineer looked and was totally puzzled but in the end replace 8 motherboards and these are ok now so looks like might be a dodgy batch of boards.

This worked for me. I used the Powershell commands then an incognito browser window to test.