![]() No USB port(s) on new MacBook Pros I'm about ready to order a new 14" MacBook Pro, but I'm a little disconcerted by the ports. The only thing I can think of is that there was an OS update about that time which might have caused an issue. I am not technically minded, but it does seem to be a problem with one type of external connection, as the cables are interchangeable. I don't have another Mac I can test the devices on. Googled for answers, but most come down to sorting it out in Disk Utility, but as I said, the drive isn't showing up there Tried 3 different cables across 3 devices, with no effectĬheck power cables for all 3 devices - all working fine (The USB ports ARE detecting other external devices such as iPad, iPhone, Kindle, USB sticks, printer) USB headphones (these do actually show up in System Preferences/Sound but they do not pick up input/output) Since then, neither of the USB ports will detect:Įxternal hard drive (also NOT showing up in disk utility) (I had just been typing in Pages - very straightforward.) (I plug it in every time I use the laptop from home as a matter of course.) It had been working perfectly since I got the new laptop (so about a week, updating pretty regularly) and done some backups on that day but then the message came up "disk not ejected properly", even though I hadn't ejected it, turned off the laptop, etc. On 21 May, my external hard drive was plugged in to back up the Time Machine. 10.14.5 It has 2 USB ports which had been working fine. USB ports in MacBook Air not recognising all devices I bought a new MacBook Air (the basic model) on 14 May operating Mojave V. ![]() I hope this solution will be helpful to people who still have the same problem. So rather than this be a question, it is more of an answer to a problem that I couldn't find an answer to. As my Macbook Pro is rather old and on it's 2nd battery, I decided to plug in the charger to see if that would make a difference.Įureka, it showed up in the Finder. I have a designated tried and true cable for this purpose.Īfter spending a good deal of time online, I ran across an article that mentioned that sometimes port voltages may be slightly different from port to port. Some of the cheap ones will charge just fine but not connect to allow book transfer. The Kobo is sensitive and requires a good bidirectional USB to mini cable. I finally pulled out my Dell laptop and had no problem connected and copying the books to the Kobo. ![]() All external drive boxes in preferences were checked. But it was nowhere to be found in Finder. My Kobo Aura One was showing that it was connected and charging to my mid 2012 Macbook Pro running Catalina. ![]()
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