Cheyenne Hawk Start-Up Facility cable is used to start the Cheyenne Hawk Thunder at the correct voltage. This acts as a jump start for your Hawk Thunder when using a standard power supply. This cable eliminates the need to start the Hawk Thunder at approx. 10-11 volts and then turn it down. It simply allows the tattooist to start the Hawk Thunder at their desired voltage. If you are running the Hawk Thunder on the new Cheyenne Hawk PUI power supply or the latest version of the Cheyenne Hawk PUII power supply you do not need this cable.