[Apart from minor issues like stability of the "weighted" base, this hub has been such a consistent, heavy-duty performer, while holding its price point (just short of 30) for exactly 4 years, that I've had to award it 5 stars (and order the identical model for my wife).  But just in the last 2 months the hub has been behaving completely opposite to expectations.  It goes totally dead with my hard drives, telling me that they're drawing too much power and therefore the hub is shutting them down until I remove them. But even when the hub is naked with the exception of a tiny flash drive, it remains dead, dark and non-communicative.  It comes back to life only when I disconnect the AC power and rely on nothing more than the power supplied by the USB ports.  That's fine, but not what I need with my 1TB (and bigger) hard drives, which until now had been showing on my computer's desktop with each start-up.  I'm about to call a rep in order to get an idea of what's going on and whether there's a fix (could it be Apple's latest update to OSX?  I'll be back pending further info.]