Yea, I have another cage coming from that seller. They accepted an offer for $18 for the first one and $10 for the second one when I explained I just needed the back plane this time and they said they'd just give me another cage and all for $10...If I'm reading you correctly, you can fit another 2.5" rear cage? That's news to me. If so I'll have to buy one and try it out.
I'll do a better write-up on it when I get the parts and test it out.
Does anyone have the "DAS___" part number for the 10gb SFP+ Mezz card some of these servers came with? Trying to find one on ebay since the Dell/Intel Mezz RJ45 one I bought didn't work.
I checked the new docs Owen uploaded and I found 1hy7zzz075d and 1hy7zzz074d but find very few purchasing options with those part numbers.