Need help on a cable

I just replaced my psu with a Corsair HX750. The Corsair installed quickly. My problem was getting the old wiring out. Anyway, I wasn't able to reconnect my hard drive. The new psu didn't have a cable to fit it. The connector was of the same type as the sata cables, but was little more than half the size. I really don't know what it's called. I was wondering if there was an adapter for it. Maybe some here are familiar with what I'm talking about. I do know that Corsair says that hybrid cables won't work with their psu. Any comments or help would be appreciated.