*Powertech usb hub* 6 usb ports / emc, lvd & rohs certification charge up to 6 usb-powered devices at the same time. the total output of the hub is 4.2a. charging power ( per side ) when charging one device: 2.1a, two devices: 1.05a/1.05a and 3 devices: 0.7a/0.7a/0.7a. the input is 110-240v ac ( detachable ac cord included ). blue led power indicator.