Like i bought this new Nspire ISO-500D 450W ATX power supply, i was about to unplug everything on my motherboard from the old powersuuply, when i noticed this 3 pin plug, connected to a CHA_FAN on motherboard, and then i checked out my new powersuuply , theres no 3pin plug, WTF?!?!? first of all, wat is CHA_FAN, and 2nd , will i be able to run the computer witout connectivity to the cha_fan or.... I NEED HELP!