That's exactly what I'd like to find, but you cannot, it seems, connect a SAS disk to a SATA slot on the mobo, only the other way around, with this adapter.
The comments also seems to say exactly that (you have to put 4 or 5 stars to comment, so that's a useless measure, gotta read those translated comments).
Dell drives are rebranded Seagates, however the firmware is slightly modified so the bios recognizes it as a Dell branded drive. Openmanage will throw an error if you use a different drive (though aside from that everything will work fine)
No worries, however I cannot see the SATA marking on yours, just the SAS, or perhaps I am blind, changed contact model today..but please double check before ordering.
And yes, Dell does not manufacture hard drives, so it's almost 100% a OEM rebranding.
if however, it is this drive it should support SATA