Re: using a fancontroller
These 2 prong/wire fans should still fit in and run fine. You won't however get the fan's RPM, which is what the third prong/wire is used for.
Re: using a fancontroller
The problem is both ends have the same connector! The end of the fan controller is a 2 prong wire, and the connector for a few of the system fans is the same exact thing. It doesn't make any sense.
Re: using a fancontroller
hmm that is odd, you can probably get a converter, although fans arn't expencive, you might want to just get a couple of 3 prong.