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