16 Oct '13, 1am

Anker Uspeed USB 3.0 9-Port Hub + 5V 2.1A Charging Port with 12V 5A Power Adapter

Anker Uspeed USB 3.0 9-Port Hub + 5V 2.1A Charging Port with 12V 5A Power Adapter

Got the Anker Uspeed USB 3.0 9-Port Hub + 5V 2.1A Charging Port with 12V 5A Power Adapter from Amazon for USD$59.99 (SGD$75) excluding shipping. Ignore the long product name, it is basically a 9-port USB 3.0 powered hub with an additional USB charging port. Technically you can use all the 9 ports for charging as well but they might not be enough current because each of the 9 port can output a maximum of 900mA. From the USB 3.0 specifications, 900mA is the maximum amount of current that can be output from a USB 3.0 port . When a device is attached to a USB 3.0 port, a device will reserve about 500-600mA for data transfer (even when not in use) and leave the rest for charging (300-400mA) which may not be enough as the average device needs about 500mA to charge. That is the reason why Anker included the additional 10th USB port which is solely use for charging, capable of 2.1...

Full article: http://lesterchan.net/blog/2013/10/16/anker-uspeed-usb-3-...

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