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USB Charging Port only charging at 450mA


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#1 Bonscottmc

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Posted 14 May 2015 - 10:20 AM

When I plug my Galaxy s5 into my Alienware 17, it's only charging at 450mA no matter which usb port I use. All of the usb ports on my Alienware are supposed to be 3.0, and one of them has the lightning symbol which I've been told is a high powered port for charging and what not. 



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#2 mjd420nova

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Posted 14 May 2015 - 05:03 PM

The USB 3.0 refers to the version of port protocol, not the amount of current you can draw from the port.   I use a powered hub for those devices requiring currnt from the port and not an external supply.  Overcurrent is the biggest cause of USB port failures.



#3 Bonscottmc

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Posted 15 May 2015 - 10:19 PM

Ok, but the specific usb port with the lightning symbol on it is supposed to supply a higher current for charging devices is it not? 






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