Power Switch on Fan...

[vulcan4d]

Is it safe to put a power switch on a fan?
My temps are usually O.K but when playing games my enviromental temperature goes up due to the video card and HD. So I cut out a hole on the side of my PC and stuck a huge fan in. The problem is that it is really noisy. Considering that 70% of the time I just work in windows and my temps are good, the fan isn't really required most of the time. I don't want to shut down, and unplug it just to have my PC quitter. So, I was thinking of putting in a switch beside my fan. So when the fan is required I would just switch on the power for the fan on the side of my PC. The thing is, I don't know if that is safe to do while the PC is running. There are two internal power cables. 1 power cable goes to my CDRW and my HD and the 2nd one is just for the fan. Well the fan has its own power cable just to itself, but both cables eventually connect in the power supply so I'm worried that if could lead to interfearence.
So, what do you guys think? Is it safe to stick on a power switch to my fan and turn it on when I want to while the computer is running?

 

[TechnoFile]

Well, I don't know about switching it on on the fly(all mine are running off a 2nd power supply), but you definately CAN put a switch or, even better, a rheostat. A rheostat is basically a dimmer switch, so you can find out what setting is the most efficent/least noisy and leave it on all the time.

 

[YahooDave]

I just found this Bay Bus for your fan at "http://www.plycon.com/caseacc.htm". Could be just what you are looking for. It allows you to adjust the speed of the fans as well as their status (on/off). Hope this helps.