When power is being drawn by a laptop, a green lightning flash on the front of the hub lights up to show the laptop is charging properly. The unit is powered by a 20v power supply that can delivers sufficient juice to run compatible laptops via USB C power input. The hub has a blue LED that glows when the hub is turned on. The Plugable UD-CA1A USB-C hub can be used horizontally as well as vertically, using the supplied.
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