Posted by Marc Martin on
URL: https://www.es-forum.com/Ferrite-Rings-for-corded-mouse-keyboard-tp4036474p4036504.html

When I used Macs in the 1990s, before there was USB, there were ADB keyboards and mice.  And the mice had a rollerball.  So maybe those, with some kind of adapter, would work better with a modern day Mac?  I don't know.