motherboard fan problem

[Qwest]

I have a Epox 8k7a motherboard. The fan on top of the AMD 761 Northbridge chip stopped working. i want to get a new fan, but i dont know what this fan is called. motherboard fan? chipset fan? any idea where i can get a new fan either? thx, all suggestions are welcome.

 

[mechBgon]

Is it a square 40 x 40mm fan that's fastened to the motherboard heatsink with screws at the corners? If so, here's one (ball-bearing too): link