That other answer is not entirely correct. A powered hub can operate on USB power only. It does not NEED to be plugged into AC. It will work the same as an un-powered hub, which will limit you to a total of 500mA of current draw from all ports combined. However, if you use the AC adapter then you will have up to 500mA per-port (2A total). So if you are only going to connect low powered devices, or self powered devices, then the AC adapter can be considered optional. If you need to connect devices that draw more power (portable hard drives, USB powered scanners, burners, etc.) then you would...
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That other answer is not entirely correct. A powered hub can operate on USB power only. It does not NEED to be plugged into AC. It will work the same as an un-powered hub, which will limit you to a total of 500mA of current draw from all ports combined. However, if you use the AC adapter then you will have up to 500mA per-port (2A total).
So if you are only going to connect low powered devices, or self powered devices, then the AC adapter can be considered optional. If you need to connect devices that draw more power (portable hard drives, USB powered scanners, burners, etc.) then you would need to use the AC adapter to supply the additional power.
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It will work with anything that talks to USB ports. It will certainly take a charge from a USB port, and my android will tether via USB. I don't know if one can tether through a hub.
I can't imagine why it wouldn't be since it worked across Mac OS & Windows 7 platforms. Is there something you've come across that would indicate limitations? Hope that helped.
More power than what? This hub already comes with a power adapter that supplies all the power it needs. You cannot give it "more power" than that. The USB 2.0 spec is 500mA per port, which would be 2A total for 4 ports and the hub comes with a 2.6A adapter. If you need more power for fast charging portable devices, then this is the wrong hub. It does not have support for high current charging.
