How can i tell if my artic square cpu cooler's fan is on high?

Is there a way to check if its on high or low? If its on low how do i change it to high? I saw on a link with cpu coolers and they did a noise test with the artic square on high and on low. ThanksHow can i tell if my artic square cpu cooler's fan is on high?in the bios, you can check the fan's rpm's, increase the voltage from there, if you have a compatible motherboard.