Thanks to Nestor from Logitech for providing me this device.
This mouse has two buttons on the left, currently mapped to 8 (bottom
button) and 9 (top button).
Note: setting bit 1 of register 01 does odd things in KDE. I looked in
SetPoint 6.61.15 and could not find an option for "Side Scroll",
perhaps it is not applicable here?
Peter Wu