I can't use NI9870 (4port RS 232) from my project tree

Hello,

How to use NI9870 ports in a vi? In particular, I can see in my tree something, but I cannot drag and drop ports in the vi?

I think I have installed all the required drivers (LV2014, NI-RIO14.0.1, NI-Serial Runtime etc etc)

Can anyone help?

Thank you very much.

Regards.

Giancarlo