Blog Post Image: Charging Your iPad or iPhone with a USB Hub

Side-by-side images show the change in power draw by the iPad when plugged into a self-powered hub that isn't attached to a computer

This image shows an iPad’s power consumption when plugged into a self-powered hub that has no data connection: On the left , the iPad in a turned-on state is drawing 100 milliamps from the self-powered hub. On the right, in a turned-off state, the iPad is drawing nearly 500 milliamps from the self-powered hub.

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