HP 98568A Installation Instruction page 478

HP 46083A Rotary Control Knob
Description and Support
The HP 46083A provides 2-axis relative cursor positioning via a rotary knob
and 2-axis toggle button. It is best suited for text editing and spreadsheet
applications. The HP 46083A connects to your computer via the HP-HIL
interface.
HP 46083A Rotary Control Knob
Series 300 HP-UX Operating System Support
on Release with Model
5.0 or later all Series 300
10-36 Adding Miscellaneous Peripherals