@LP
The device is supplied with Poseidon and has to be loaded by adding a command to the startup-sequence.
To find the Docs for it open the Poseidon Guide, select the Class Drivers section, then HID class and on that page you should find a link to the input.device page:
"Be sure to have installed the new input.device to have a 100% compatible
mouse and keyboard replacement."
I think there is an option to install this in the Poseidon installer too.
HTH
Robert