Logitech Trackman Marble
Remap buttons to my preference.
Listing 1: /etc/X11/xorg.conf.d/50-logitech_trackball.conf
Section "InputClass" Identifier "Swap back button (left small button) with middle click" MatchProduct "Logitech USB Trackball" Option "ButtonMapping" "1 8 3 4 5 6 7 2 9" EndSection