Fans need to be matched carefully to the socket type of the MB.
After that, it has to meet the heat/speed requirements of the CPU.
(Even if it fits it might not "cool enough"...)
Some fans need to have a third sensor wire or some MBs will turn
off. They assume the fan failed. (Other MBs will happily let the CPU
fry with a failed fan...)
The "little things" someone saw might be a form of punch-in rivets.
I removed almost ALL quoting since there were two Anns and it was
getting very confusing.
Rick Glazier
From: "g.Computer9f"
I found this fan ($18)
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