FAN CASING AND FAN/HEATSINK

Question

hi as i am new to this site i am unawre of the protocols,so Hello everybodyi ahve been given a 478 mobo which is a 478:- N4-IBFGL V1.3(GVthe only trouble is there is no fan housing for the fan to fit in, i thougt i would try a 478 fan housin that i have and it doesnot fit the hols on the mobo are a lot smaller apart than a standard 478. I am having trouble locating one. I would be very greatful if you could point me in the right direction for oneMany thnkas for your help All the best Simshi