Hi Macinwin,
Yes power is available; when I say no lights, when working there is a light which comes on and off at irregular intervals, presumably according to the activity, when I connect it up the light flashes on very briefly but then goes off and does not come on again......
My other device, the Verbatim does not need a power supply and that is not seen either, but I can get it to be seen by my MacbookPro if I connect it before booting up and then it is seen, but if I turn off my Macbook Pro and then connect the Verbatim, like the WD it is not seen....!!
buddy06