@pleb @evelyn It would sound like a good idea if quality of those cables was consistent, but in reality you can't just put a recommendation to use only certified cables into the manual and forget about it. Apple used to put a notch into USB ports of their keyboards. So you could plug a mouse on either side of the keyboard, but not the USB drive. Because people would definitely do it and complain about transfer speeds as those were USB 1.1 ports.