Just a few days ago, Apple released macOS Sonoma 14.4 alongside watchOS 10.4; Both iOS 17.4 and iPadOS 17.4 were released slightly earlier. And although this is a major update, a major bug has been discovered Makes it difficult for Mac users to connect devices to an external monitor’s USB hub.

It seems, Several Mac users are experiencing problems with their external monitors After updating to macOS Sonoma 14.4. The update breaks the functionality of the USB hub on some displays, causing peripherals such as a mouse and keyboard connected to an external monitor to no longer work.

I have an issue with my MacBook Pro M2 Max 64 GB RAM and Dell U3219Q monitor; None of the USB peripherals connected to the monitor’s USB hub are working. In contrast, when I connect a Windows computer to the Dell monitor, all peripherals work fine.

The latest macOS update appears to include a bug regarding external monitors

The good thing about a monitor with a USB hub is allows you to connect different peripherals directly to the monitor and have the Mac recognize themThis expands the possibilities and ports of the device, as one of the ports on the Mac is probably occupied for connecting the device to the monitor.

Apple has not confirmed that macOS Sonoma 14.4 is the cause of these issuesAlthough there are many users who complain on platforms such as Reddit or Apple forums. I hope Apple releases it An update that fixes this bug and allows users to reconnect peripherals to monitors connected to the Mac.

Some users say they have I found a solution to the problemEven though it is temporary, it is useful to know whether you are affected by this error. Sign in to your Mac at: Open System Preferences, then Privacy & Security, find “Allow accessories to connect” and change it to “Always ask”. Now turn off and unplug the monitor, restart your Mac, turn on the monitor, and plug it back into your Mac.