I point my finger at Dell and say "Shame on you again!"
I make another black mark in my in-bed-with-microsoft company, Dell.
1. Their power supplies/mobo connector aren't wired standard.
2. cpu/fan position won't work in standard cases
And from you:
3. They supply a non-standard sblive.
That sounds exactly like Microsoft business practice to me. Dell will decide what will work on thier boxes, not you. You don't even get a standard Windows install.
If they have standard pci slots, there are
cheap real sblive cards available.