I believe they had this info since the beginning. :)
These guys aren't experts in Supermicro servers. This is why we can get this hardware for such low price. :)
If these guys were experts they'd reset passwords on X10DRH-CT and triple the price.
Your link in the first message is with the SAS3 backplane.
I've got two of them. Both have the SAS3 backplane.
I know you were unlucky and got one with SAS2, but nobody else has complained so far.
Of course, YMMV.