USB Hub & External Monitors Not Working After MacOS Sonoma 14.4 Update for Some Mac Users
Some Mac users are discovering that USB-C hubs and external monitors are no longer working with their Mac after updating to macOS Sonoma 14.4. This issue can apparently impact anything connected to the USB Hub as well, leaving the USB hub devices undetected by the Mac, including keyboards, mice, external displays, SD card readers, cameras, external hard drives and storage devices, and basically any other USB accessory that connects to the USB-C hub and then to the Mac.
Many Mac users rely on dongles and USB-C hubs (like this) to expand their port options, particularly after Apple started removing ports from their laptop lineup of computers. This includes all modern models of MacBook Air, which only have two USB-C ports, and many MacBook Pro models, many of which also only have two USB-C ports. Many users of the newest MacBook Pro models with more hardware port options continue to require USB-C hubs, as well as many Mac users with iMac, Mac mini, or even Mac Pro.
If you’re a Mac user who relies on a USB-C hub to expand your port options, and you have not yet updated to macOS Sonoma 14.4, you may wish to hold off on the system update until this issue gets resolved.
If you’re already impacted by this USB Hub issue, read on to find a potential fix, as well as a workaround.