OK, the used Small Green Computer Vortexbox appliance I bought on eBay for $362 is here (finally) and it works fine, but the seller put the wrong picture up; it's actually this SGC unit, which is an earlier generation chassis from 2010:
As far as I can tell, internally it's just like this one, which is what was pictured in the listing, and which I'd wanted to buy:
The one difference I see is that I think the lower unit has an IEC power cord (which I prefer) and the upper one has an external transformer, like a laptop.
The seller was totally cool about the mixup and he's happy to take it back or refund me some money ($30) to create a price reduction.
I don't really like its appearance. Will its guts (plus a laptop optical drive) fit into this chassis:
http://www.shop.perfecthometheater.com/HTPC-ITX2-Black-Ultra-small-aluminum-chassis-HTPC-ITX2-B.htm
I'm assuming the answer is yes, but I'm not 100% positive. Maybe I could just buy that chassis and the optical drive and move it all over? Would the case fan work in the new chassis? How about the power supply? Is it better just to buy a new, more modern motherboard?
I ask because I'm trying to decide whether to return this unit or keep it. As I said, it works fine.
Thanks for all the help!