This is a weird plug in thing that shows up on my iMac.



They are part of the operating system and being triggered to appear because you most likely have an older piece of software that is conflicting with the OS. For instance, if you had an intel version of some Garmin navigation software that had been discontinued but you were on an M Apple silicon processor. Just as example. Pulling up Activity monitor when this happens could possibly reveal the software that is to blame. It's not harmful at all. Just an annoyance. Hopefully Apple will resolve it in an upcoming Sequoia update. You should be able to right click and eject it.

If you'd like to dig further, the legacy software may be listed in login items within system settings or a launch folder. Often there are plist files that reside in one of a few folders that trigger software to run in the background and it is likely the culprit is listed there, launching and then causing the issue.