I don't know if I would spend $15 just for a connector.....
Edit: ... and you have only solved half of the equation: you have not started to control the fans!
A good solution is obviously always a fan controller. Besides allowing you to control fan speed linearly, rather than three step (5V, 7V, 12V), it also provides power cable extensions plus thermal sensors.
For about $40 you can get the Scythe "KAZE MASTER Pro "
5.25" Bay Fan Controller. Nice feature is that it can drive fans with up to 1A (12W) per channel. Granted, the thermal sensors are not exactly high precision but good enough for rock'n'roll; otherwise you can verify the offset with a reference thermal sensor...
One does not have to mount it into a 5.25" slot if one doesn't want to.
I was lucky to get some Aerocool Easywatch controlers for less than US$8 (yes eight!!). They are pot ugly, but stripped of the gawdy plastic and mounted inside, they have one peachy bonus: black flat ribbon cables for power and sensors.
Which brings us back to our current topic: flat ribbon cables make cable management so easy it's almost like cheating. If one could only buy black cables!!!! I have bugged at least a dozen companies, to no avail. Well the effort was not a total waste, since I scored a couple of free cables.Edited by mru - 5/11/10 at 11:08am