They will for example charge an iPhone, but the device won’t be able to transfer any data to your Mac. Some will work though, but not with all ports on the hub, while for others not ports work at all!įor example, USB-C & HDMI ports might work, but in general most USB 3.0 ports don’t work! These ports do power devices. Hopefully, they will come up with a fix soon! macOS 12 USB Bug WorkaroundĪfter reading tens of reports I can conclude that a bug causes macOS Monterey to stop supporting a large number of USB hubs. What’s worrisome though, is that the macOS Monterey USB bug has surfaced since the early betas and Apple has failed to find a solution during several months of beta testing. If you still encounter problems use the tips provided below

Update: Apple seems to have fixed some of the USB ports issues in macOS 12.1! Thanks Mike for confirming! Proceed with the update. If you heavily rely on USB hubs and read this article in useful time, don’t update to macOS Monterey just yet! Prevention is the only solution at this moment!Īccording to reader Apri, Apple is aware of this issue and plans to fix it in an upcoming software update. How To Fix USB Hubs Not Working In macOS Monterey

Reddit – user complaining that he is not able to use his mouse and keyboard anymore because USB hub fails in macOS Monterey!.

Apple’s Discussion Forums – a recent thread started yesterday.

Apple’s Developer Forums – These reports show that the issue surfaced ever since the beta testing stages, but Apple seems to have failed to patch it for the public release.

I’ve researched this issue and found numerous similar reports on: “Just updated to Monterey 12.0.1 and its not recognizing my external hard drives.” “2 days ago, I updated my MBA M1 to MacOS 12.0.1. This important issue has been reported by several users on our macOS Monterey 12.0.1 review page: Are USB ports not working on MacBook ever since you updated to macOS Monterey? USB hubs fail to recognize your external devices such as SSDs? This is a serious macOS 12 bug! It’s a widespread issue, especially amongst M1 Mac owners, but not only.

Mac not detecting usb device