It is worth repeating that rev. 1.10 does not support v2 CPU's.
Also the motherboard is EEATX, so chassis support is somewhat limited.
I'm sure that if you asked the vendor they would upgrade the BIOS to a newer version for you. They are a legit vendor of a lot of white box hardware.
Also, with regards to mainboard and chassis support, if you're going for 1U then your options are necessarily limited. I am currently building 1U servers and it's very difficult to find the right combinations. Whenever I find a combination that works at all, especially if it allows for an expansion slot or two (even three sometimes!) then I am happy because that's about as good as you're going to get.
I think this is a great deal.
Edit: Also, this vendor is very good. I'm not related, I'm just a happy customer.