If SSD B doesn't boot, then boot from your UniBeast USB drive and select SSD B. Now, you can download the Chimera installer (if you haven't got it already) and run it. You should be able to now boot from SSD B. (Be sure to boot into the BIOS and select SSD B as the first drive.)
I recommend you look for your solution in the Snow Leopard Desktop Support forum section. If you don't see a solution, then post your question in there. We have several Moderators who are involved with Forum members there and can help you to get running....I have bought GA Z77-DS3H - Core i5 3570K - HD 4000 listed on the buyer's guide, but i can't get it to work with snow leopard. Any ideas?
i can boot with iboot, but not from hd and no audio, no ethernet working