Hi, Another IBM people replies:

rutledg@us.ibm.com wrote:
> 
> TrackPoint firmware, and of course the driver, are different from those in
> the TP770 and other ThinkPads.  There is some documentation on the
> TrackPoint support website, http://wwwcssrv.almaden.ibm.com/trackpoint/
> under Serial TrackPoint.  Most of the TrackPoint test programs work with
> the Serial TrackPoint when the proper option switches are used.
> 
>                Joe Rutledge

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Lou