The fan inside my Dimension 4700 is starting to get old and is off and on with a very unpleasant noise, instead of replacing the fan i was interested in upgrading to a improved one. Ive been looking at the technical specifications and i know i need a 92mm fan, but all of the upgraded ones ive found all seem to be 4-Pin connectors. Would a 4-pin be able to fit inside a 5-pin or would they not be compatible, other imformtaion on what the "pin" is would be great as well. Thank you.