You’re wrong, as I have used every SP since Rhino 6 was released on this machine and up until SP10 I had no problems with the space mouse.
@Rhino_Bulgaria has a point. @McNeel simply has to maintain support for old models (although my space mouse is not old at all) Also as said numerous times in this thread, I have no problem with other software (3DEXPERIENCE / CATIA, DraftSight)
@dale, is there a way to acquire old SP installers? I’ll try the above mentioned method. As I think I deleted SP9 installation and I have upgraded all my machines to SP10.