USB was working great for me after the White Sierra Cheetah update.
More seriously: I'm hoping hardware connection issues- particularly the aggravating "unexpected ejections" have been dealt with here too. About to test that with my own hardware (AGAIN) right now: Mac Studio Ultra through several brand new cables hooked to an HDD RAID enclosure that remains consistently connected with my Intel Macs running macOS < Big Sur but won't through ANY cable- directly connected (USB-C or USB-A) or through powered hubs, whether allowed to sleep or not. I'm hoping this update finally fixed it and will add an edit line if it did or not soon. It usually only takes up to 3 hours to see "unexpected ejection."
I'm also hoping the
promised speeds of jacks and the actual speeds got fixed too.
Both make me feel like there is great opportunity for debugging hardware ports in Monterey.
Update: a whopping 73 minutes later...
Maybe next update
I miss "just works." Still hoping for Snow Monterey at WWDC... maybe 2 years worth of "Snow" bug fixes.
And before I get 10+ posts trying to blame everything but Monterey, I have tested through EVERYTHING to rule out as much as possible that would not be Monterey. Same cable(s) to same drive hooked to other Macs running Mac OS BEFORE Big Sur is perfectly stable. Per searches- including on Apple's own forums- this problem is commonplace with many kinds of enclosures but some work fine, so it's not a problem for all equipment... just some, with no easy way to tell short of hooking things up and seeing what happens. SSD stuff seems to work better than HDDs, HDD RAIDs seem to have more trouble than anything else... but some HDD RAID enclosures seem to work too. Sleep seems to be a strong catalyst but ejections occur without either sleeping too. I've objectively tested through everything and am convinced the problem is Monterey... and probably Big Sur too based on others experiences with the same.