Actually it´s more like a Joystick/mouse/and programmable key input gadget...
If you spend some time looking information for it on Internet you l l see it was discontinued several years ago, an it was one of the best solutions for playing strategic 3d games and even 1st person shooting games...
Now can be used on Windows 7 to 10 and Linux, using an open source driver called Strategic Engine (only).
DPI resolution?? Unknown... Never tried it with Cross Hair..and honestly I would not know hot what to consider it... Mouse?? Game Controller? Keyboard???