6 Ports USB (Universal Serial Bus) Charger Connect up to 6 USB (Universal Serial Bus) devices at once from a single outlet. Each USB (Universal Serial Bus) port can provide up to 2.1 Amps of power Voltage Boost Technology Smart technology that determines when charging output is encountering resistance. By automatically compensating for this, Voltage Boost ensures charging speeds remain fast for cable or device. Fast Charge Up to 4X faster than standard 1A chargers