Just bought a pair of WD Elements drive, and son of a gun, the same affliction affects them also - you cannot access more than ONE WD drive at a time. Going back to Best buy...
Think it's time to buy bare drives and USB to SATA enclosures.
that's what i do. i like enclosures from other world computing, but they're a bit spendy. i also have to find a 2.5" SATA disk for my mac mini ... may be getting a hybrid for this disk since i can get it cheap.
"... and another thing about you democrats ... you all believe in science!" -- denny crane