HP Xpander

The HP Xpander (F1903A) aka "Endeavour" was to be Hewlett-Packard's newest graphing calculator in 2002,[1] but the project was cancelled in November 2001 months before it was scheduled to go into production.

It had a semi-translucent green cover on a gray case and an expansion slot.

The underlying operating system was Windows CE 3.0.

One of the obvious omissions in the Xpander was the lack of a computer algebra system (CAS).

It was hosted by Saltire Software, who had been involved in its design.