I recently changed from a wired Logitech Trackman Wheel to a wireless Logitech M570 Trackball (which has a USB receiver plugged into the USB port on an Apple wired keyboard) that is physically plugged into an early 2009 Mac Pro. I use Sharemouse v2.0.53 to virtually share the mouse and keyboard between the Pro and a 2012 Mac mini.
Since changing mice, the mouse's scroll wheel no longer works on the "remote" mini (neither do the new thumb buttons, but I can live without those). Everything else with the keyboard and mouse still works. I tried installing the Logitech Control Center software on the mini, but since the USB receiver isn't actually plugged into that computer, it doesn't even recognize that a Logitech mouse is "attached" to it.
I tried plugging the USB receiver directly into a USB port on the computer, instead of into the keyboard, but that didn't make any difference. Any ideas? Or alternatives to Sharemouse? (My "free maintenance" time is up and I would have to purchase another license to get an updated version, and I don't like that they want $50 instead of $20 just because I have three monitors.)