... C6,C7,C8,C14 optional ac/dc adpater switching power adapter Spec. as following:Input Rated Voltage :100Vac~240VacInput ... the profesional factory of swtiching mode power supply, power adapter ,usb charger, laptop adapter, ac/dc adapter, Led driver, dimmable led driver, ... best to meet customer demands and willing to provide high quality product with excellent performance , best service and reasonable ...