found a TrackMan Marble FX + questions about sample / polling rate : r/Trackballs
910-000808 - Logitech Trackman Marble - trackball - USB - Currys Business
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
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