I had a need to test the insert/remove a whole bunch for a while. Because the timing worked out, I ended up getting a programmable USB hub [1]. It worked well for my needs, but I'm not sure I'd trust it enough for a really inaccessible location.
I do wish I could find a not stupid priced version of this concept that does USB 3.1
I do wish I could find a not stupid priced version of this concept that does USB 3.1
[1] https://capablerobot.com/products/programmable-usb-hub/