[y] [TrackPoint Engineering Specifications for version 3E](
https://web.archive.org/web/20100526161812/http://wwwcssrv.almaden.ibm.com/trackpoint/download.html)
[y] [TrackPoint Engineering Specifications for version 3E](
https://web.archive.org/web/20100526161812/http://wwwcssrv.almaden.ibm.com/trackpoint/download.html)