Post subject: Western Digital MyBook Essential 500GB WDG1U5000 Posted: Jan 17, 2008 - 04:21 CST
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The 500 gig MyBook external hard drive used a maximum of 32 watts when you first plug it in. The hard drive actually automatically spins down after about 10 minutes of inactivity, and when that happens it uses up 3 watts. When it's doing some copying it used up 14 watts, and when "idle" it used up 13 watts.
I would recommend that the drive be physically powered off unless you use it often because it does use up 3 watts even with the hard disk shut off.