On Sep 19, 2014, at 11:19 AM, Roger Heflin <rogerheflin(a)gmail.com> wrote:
Power supply would be my only guess to cause system wide failures
with
2 separate motherboards,
Bad logic board batch is more likely than a power supply frying only the SATA 2 ports.
Power supplies do weird things, so I'd say if the problem happens with one drive on
SATA rev2 ports, does not happen with it on a rev3 port, then it's not power supply
it's the logic board. If it happens with many (several or more) drives on rev2 ports
but not on rev3 ports, then it could be power supply or logic board.
Chris Murphy