You can use the USB connection or a 5vdc supply, But only one can be in use, your choice
Just a phone charger that is all that is needed for the 5vdc connection, or if you have a 5vdc power supply in your system you can use that
Photo attached showing the 5vdc connection & a jumper on the E-Stop terminal block which you will need to make it work, or use the E-Stop correctly wired