usb passthrough openvz

Not if I could help with an issue with virtualization in Proxmox openvz

I have a turnkey core machine (debian) and I want to use a USB port exclusively for her to read anything you put that port
I'll thank you to give me a course that I have to do to achieve that and I was researching and I echo a mess
I guess it's with the vzctl set command (--devices or --devnodes) what I do not understand what the parameters and commands that get them (tried it with lsusb for example)

Thanks for your help