There appear to be a couple of snags in the latest iteration of macOS Sonoma that are upsetting to Apple admins: Some USB hubs are no longer recognized by the Mac and a popular command tool used to restart services on remote Apple devices is no longer supported.
Why isn’t my USB hub working?
The USB hub issue is emerging across the Apple web at the moment, including on Apple’s own support forums and Reddit. The problem isn’t consistent — most users aren’t affected — and it seems to relate to Macs running the latest version of Sonoma and third-party monitors equipped with USB hubs.