Contacted Lenovo, they didn't seem to have any clue about the ultra bay 750m. The first person I spoke with didn't even know what SLI was, and was trying to tell me that the Y510p SLI model had the same video card as my Y410p. I had to explain to them that it in fact had 2 750m video cards. I have seen on NBR that the SLI ultrabay will be released in August, but I have also seen that it is not coming out at all. Does anyone have any solid information about it? If it is infact not coming out, I may try to buy a Y510p version and mod it for the Y410p.