Originally Posted by wwestman
Yes it is a pc fan. I guess I can google the pin outs.
Just went through the same when wiring an exhaust fan for my refrigerator enclosure to the 12v fridges. Quite simple. Cut off the connector. Strip all four wires. Using a powered positive and a negative, touch combinations of pairs until you get the fan to run. The computer fans I got were polarity sensitive so each pair that is tested may require being tested twice reversing the positive with the negative.