Does not perform as advertised
Don't buy this unit from here. They package it with an underpowered wall unit (5v, 1000mA). This makes the port voltage fall well below the USB 2.0 spec necessary to power 7 units needing uniform power. Depending on the power draw you need, you're going to get only 3-4 units that work -- which is essentially what you'll get off the power that comes through the USB port on your computer. The base unit is a good unit. Just make sure you are getting a 5w / 3.5A power brick so you get 500mA per port like the USB 2.0 spec.
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