New Version: 2016.12.08 1.3.1.11226 [UPDATED]

[Dirk.nl]

Hi thechez,

Maybe completely wrong or off topic, but;
(I think nothing to do with your HP Prime but maybe with your (virtual) USB ports)

If you are using Virtual Box you must be a Virtual Box User to be able to use USB devices.

After installing VBox type in the Linux terminal (Cntrl-Alt-T) the following command:

sudo usermod -a -G vboxusers username
or
sudo adduser username vboxusers

Username must be the short (Linux) login name, in my case; dirk
Long name = Dirk Hartland.