On Tue, 19 Nov 2019 21:56:05 +0800
Ed Greshko wrote:

> I wonder why yours shows as low-speed USB device.  Just curious.

Because it is plugged into a usb2 port to leave usb3 port free
for stuff that needs them. These are both wired mice, not wireless.

I was wondering if maybe older kernels used to reconnect
silently so no one noticed the port problem. That would explain
why I never saw it before (because it is hard to miss when
my button reprogramming disappears and drag lock stops working :-).