I don't know anything about SLI. But two refurbs I got had nothing at all, while one, although too flakey to be usable, came with everything. When I say nothing, I mean nothing but the motherboard. One came in a random mobo box so at first I thought they sent me some horrendous obsolete trash, not the right mobo.
The pic of the new board at newgg.com shows you everything in the box, and everything you may not get.
If it is an MSI mobo, I have been told that MSI will send you the whole pack of accessories if you inform them your board came without them. However, you only have a few days to return refurbs.
If you haven't built a computer before, you have to realize that if things don't work, you can't tell what is wrong without some known good items. If the mobo is unknown, you need to KNOW your power supply, video, memory, and CPU are good. Otherwise you cannot know the mobo is the problem. Etc. If you have another computer you can try the stuff in, or a friend that will let you experiment with his, you are one step ahead. It is not too uncommon for newegg refurbs to be DOA or flakey. Refurbs have probably been set up by a previous owner, like some hapless overclocker that botched the job, and so won't boot until you reset the CMOS, so just count on that.
Good luck.
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