Logitech Trackman Marble FX T-CJ12 Mouse Tested Works | eBay
Logitech T-CJ12 - Trackballs.EU
found a TrackMan Marble FX + questions about sample / polling rate : r/Trackballs
Logitech T-CL13 TrackMan Marble Wheel
Ran across this subreddit and was inspired to dig out my old Logitech Trackman Marble FX. Haven't used it for 10 years, but I think I might run it as my daily