Frage: USB-Port (only) does not work with USB-Sticks
I have an Early 2011 MacBookPro, 13''. Both USB-Port doesn't accept USB-Sticks any more - or I can not see it on the desktop or with the disk utilites. Directly booting from an USB-Stick isn't possible neither. It tried ten different sticks from different persons and from different apple owners. Really strange is, that all other USB-Devices, like keyboards, presenters etc. DO WORK at both USB-Ports. Lateley I did the High Sierra update, but I don't know exactly, if this was the "changer".
MacBook Pro, iOS 11.2.6