This is the reply I got from the seller after asking him if it would work with an IBM M1015:
"The power supply is a 520w power supply, the back plane is also included. You should be able to upgrade the power supply if you wanted to. Our tech also says you should not have a problem connecting it to your IBM as long as you are using both mini sas connectors"
I did not ask him anything about SAS1/SAS2 though, but from reading your other thread
@Chuckleb, it seems like it would be wise to stay away from SAS1 backplanes.
Edit: Just sent him an ebay message asking if he knew if they were SAS1 or SAS2 backplanes.
Edit #2: Seller said he was not sure about it being SAS1 or SAS2 unfortunately :'( So it looks like it could be either. But from
@Stanza's link it seems to be 3G SAS.
I don't know if I'm going to bite yet or not. What does everybody think?