Hi there I am having a Dell Inspiron 530S with me and now I am thinking to use a Weston Digital portable hard drive in it for my back up of files, but having problems while backup I think that the drive would overload the PSU, I just wanted to know that is there anyone who has tried the same thing on their Inspiron 530S and is it safe to power external drives from the 530S's USB ports or should I provide a separate power supply for my back up drive
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