You need a SATA to SFF-8482 cable. They're relatively easy to find on eBay.
That is a dual-port drive, so you can use the cables with 2 SATA connections (to add redundancy). Make sure you plug the SATA connector into the blue connections on the motherboard (the blue connections are SAS, the black and white connections are SATA only).
Jab at Intel: The cable in Ed's answer is the industry standard that almost everyone uses. These goofy cables with non-standard connections are just one of the reasons I steer clear of Intel motherboards. Also, the documentation is horrid, took me minutes to figure out how to plug a hard drive into that darn motherboard... seriously, minutes. It shouldn't take but seconds on their spec page.