4-pin fan splitter/extension cable

I’m on a desperate hunt for a specific 4-pin fan extension cable. I feel like I’ve practically paced a hole through half the electronics stores in Washington, D.C., yet all I can find are clueless clerks trying to sell me useless Molex adapters or some ridiculous 2-pin nonsense that won't do a thing.

Here are the photos for reference:
http://www.llamatronics.com/comp/cables/fan4-ext.jpg

This one?

Exactly that. Thanks.

When you need stuff like this, Chipotle is my first stop...