Using this Chauvet Epix Drive 642 Processor and power supply is easy. First, connect the power supply to the processor and then to a suitable power source. Once it's powered on, you can start using the processor for your EPIX 2.0 series. When using, make sure the power supply is in a well - ventilated area to avoid overheating. As for maintenance, keep the device clean and free from dust. Although the missing rubber cap on the 'MENU/ESC' button doesn't affect use, try to protect the button from excessive force to prevent any potential damage. If you face any problems, contact our customer service for help.