Easy Cable Extension Question

Hi, I'm sure this is an easy question... I'm fairly new to poking around inside my machine, its not quite as scary in there as I thought!

I've just upgraded to a new, higher power PSU. All went well. The only difficulty I had is that one of the cables from the new psu is more or less replacing TWO of the cables from the stock PSU.

This cable has 3 thin connectors (not the larger 4 pin one), that should be running up to my two optical drives then all the way down to my HD. Its simply not long enough.

So basically I can only reach one optical drive and my HD. I need a an extension with a male end and a female end so it can reach the remaining optical drive. I've searched Newegg as well as the web, hoping to find what exactly this cable is called (I'm sure this is like one of the most basic terms too, ugh)... not much luck and there are obviously a million cables / adapters out there.

Can anyone point me in the right direction with a name or link? I'd appreciate it!

Thanks for the link, that helps.

I guess what I'm looking for is a 15-pin SATA cable with a male and female end. Knowing what it is called should help.

Thanks!