[Nut-upsuser] NUT and relay on USB

[Maurizio]

Hi there,
I have a question about a raspberry pi as NUT server and a "relay".
I explain my situation: I have an UPS with USB port, so I connect it to 
the rasp. The problem is that I have a device manageable only via USB 
port.
How can I handle this configuration?
My assumptions are:
1) split the USB cable from UPS to rasp and device, but I don't know if it 
works
2) connect the UPS to rasp directly, so connect the rasp (by GPIO) to 
device as a Serial port with a DIY cable.

The problem with second solution is that I don't know if (and how) I can 
do it with NUT.

Thanks a lot for all opinions.