Will communication via usb work if the power is taken out to a separate unit?

Question

Data transfer

Good afternoon.
In general, there is a device that is powered by 3 USB connectors and transmits data through one of them.
There are no separate power inputs. Idiocy ...
Question:
Is it possible to remake the cable - take the power line to a separate power supply, and will the transmission work?
Will it be necessary to make a common "mass" of the block and usb?
The device has an FT232 converter, if it matters.
PS Do not offer active usb switches =)

Answer 1

Should work fine.
At least I have a device powered by an outlet and communicating with a PC