I have a 750GB for one 211 and I want to get a 2nd 211 and a smaller 250gb, while researching I saw some units that don't have a power supply? I am confused I see some products from western digital and I don't know what the difference is, thanks
Just tried my WD Passport 320GB (small form factor) HD and it worked.
Not only can it be a USB power issue with the laptop/desktop, but the bus powered HD it self.
WD Passport's seem to be the few that actually work on most USB ports and hubs with a single USB power cord.
I thought I read somewhere that the EHD has to have it's own power supply. If these smaller WD without it's own power supply work, let us know. I would much rather just add one of those on my bedroom 211 than have to get a larger one with additional clutter, etc.