I had disk A, and the electrics went on it and took it into a computer specialist and tried plugging it directly into the mobo, but nothing. I 'think' it was caused by plugging the both types of power cables in at the same time.
I ordered disk B from ebay, just got it today, (got my little torx tool as well!), then changed over that top plate, the one that was held down with 6 screws. But disk a still didn't work ;-(
Both WD740 Raptor's
One thing though, someone here mentioned about a connector ? I didn't see one ?
Any help really appreciated.