Yes, Micro Speed makes or did make one. Believe it's Micro Speed S-Trac model. I have not idea if this is a current item. They do show up on eBay and Sun.Wanted news group from time to time. jim > pixie_fae wrote: > > does anyone know if Sun or any other company makes a trackball suitable for use on a sun sparcstation20 (i cant stand the optical mouse )