Политика конфиденциальности （This machine we adopt JPT Laser resource and also consist of a Computer system, your facet just plug and Engage in） The control board need a 5V DC energy supply&interval; We propose a 5V/3A DC source&interval; The Vcc and Gnd pin are four/5 and twelve/thirteen of CON4 https://www.directindustry.com/prod/beijing-jcz-technology-co-ltd-223603.html