If you are purchasing one of our JAMMA kits (combination packages with power supply), all you will need is a Monitor. These boards have VGA output and will work with computer monitors, the CPU is not required to make it run! Other than that, you will need speakers hooked up for the best arcade experience. The speakers come with most of our kits but we also sell these separately. If you get stuck, just send us a message we'll help you out.