AbsolutePower 4.2 Dual Fast Charge for Tablets - Quickly charge two USB power tablets, a tablet and smartphone, two smartphones-any two USB powered devices-with the Kensington AbsolutePower 4.2 Dual Fast Charge. The PowerWhiz technology automatically recognizes your device and provides the right charge always. Connect your smartphone, such as the iPhone ; or Samsung Galaxy ;. While each USB port has 2.1 Amps of power the AbsolutePower 4.2 will only deliver the 1.0 Amp your smartphone needs and no more for fast, safe charging