Sys-usb creations

Good afternoon guys,
I want to “clone” my sys-usb,also increase it size from 400mb as well as assign different USB controllers. So that each sys-usb is in control of different USB ports on my server. So let’s say this as example…
sys-usb has> 1gb storage size > in control of > usb ports 2.0 with controller abc

sys-usb1 has> 1gb storage size > in control of > usb ports 3.0 with controller xyz.

Being that I can not shut/stop “sys-usb” because of mouse&keyboard. How would I do the said above in terminal???

Thank you for you time and input