DFI Question

[Like a Fox Yet Again]

What is the difference between the DFI: nf4 SLI-DR, UT nf4 SLI-DR, and the UT nf4 SLI-D boards? I have made many a visit to DFI's site to find out more info, but can't really tell the difference between the mainbaords. Any help would be greatly appreciated.

 

[Demo24]

The DR has 4 extra SATA ports (silicon chip) and I belive some extra packaging

the D removes those 4 SATA ports and you bascially have a Ultra-d but with the SLI connector