>This looks like a non-hotswappable board with proprietary switches, and it's still tied to Logitech's wireless dongles (which are notoriously bad about both causing and being super-sensitive to 2.4Ghz-spectrum interference).

I like my logitech mouse, but for the desktop I built, I had to buy and extension USB cable to keep the dongle far enough away from the machine to get the mouse to work without glitching.