Will this USB - DC Cable work on my External Hard Drive?

I recently got a new External Hard Drive (Listed Below). In order for the Hard Drive to operate, it is required to be plugged into an outlet. This is fine, but keeps me from being 100% mobile. I was looking at getting a USB - DC cable to solve this problem, but I am unsure if it will work for sure and was hoping that maybe someone out there has tried this, or has knowledge of this.

HDD- http://www.amazon.com/Western-Digital-Elements-External-WDBAAU0020HBK-NESN/dp/B002QEBMCI

Cable- http://www.meritline.com/usb-to-dc-35mm-5v-power-cable---p-37035.aspx

Answer
No that cable will not work, 3.5" hard drives require +5 and +12 positive to work, that cable only provides +5V so you will not be able to get the drive to spin up. If you want to be completely mobile you will have to get a 2.5" external drive as those can be bus powered via USB.

Possible for a large volume external hard drive to be USB powered?

Denno020

If they're not already available, which I don't think they are, is it possible for a high volumen eternal hard drive (500GB+) to be USB powered?
I have an external 120GB Seagate which is USB powered, but thats the larest volume size I've seen.. USB powered is so much more convenient that having to find another power point..

Answer
if got a seagate 500 gig external which is usb powered and plugs in your wall. as far as i know you dont get anything over 250 gig that is only usb powered

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Title Post: Will this USB - DC Cable work on my External Hard Drive?
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