EiioX Qi Enabled Wireless Charger Inductive Charging Pad Station for All Qi Standard Devices Black Plug and Play Qi Standard-No driver required-Easy to use LED Indicator Lights: Green LED on when the battery are charging, Blue LED Alarms when the battery is full. Long terms standby can be assured, as charging pad controlled by smart chips. Intelligent Induction: Prevents overcharging with standby mode once the battery is fully charged. Power Source: Any charger 500-2100mA with USB port with Micro USB cable, or even plug it directly into computer or TV.