Four USB power ports charge up to four mobile devices simultaneously * Work for All smart phone and iPads and Tablets * Input: 100-240VACm, 50-60Hz, 0.3A Max; Output: 1-4 x USB, 5 VDC, 2.1A Max * Perfect for your iPod or Cell Phone, just attach the proper cable, plug it in and charge your device * LED Lights Up for Charging