Replacing a Lenovo H330 PSU

[dsalter]

atm i have a "FSP180-50PLV FSP Group 180W Power Supply Unit Lenovo" (Copy and pasted, i suck at Hardware )
and currently looking for a replacement since it fried and i'v spotted a "FSP MODEL NO;FSP250-50LA/9PA250A900 250W POWER SUPPLY UNIT"

but will it fit a Lenovo slim tower case? since they are similar in shape but the fan looks different...
if it won't can someone help please as the only thing i'v found that is a 100% replacement has been high priced due to scarcity

 

[MasterDell]

This should be able to fit: http://www.newegg.com/Product/Product.aspx?Item=N82E16817104080&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
It isnt easy to be exact though. No where could I find the size of the original PSU in that case.. Therefore I couldn't pinpoint what size of PSU it is. It does look like a mITX PSU but there are other really weird sizes out there that it could be aswell.

 

[dsalter]

This should be able to fit: http://www.newegg.com/Product/Product.aspx?Item=N82E16817104080&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
It isnt easy to be exact though. No where could I find the size of the original PSU in that case.. Therefore I couldn't pinpoint what size of PSU it is. It does look like a mITX PSU but there are other really weird sizes out there that it could be aswell.

know what you mean the lenovo isn't really a common shape compared to other computers i'v owned but unfortunately thats what i have currently and unfortunately i cant upgrade system for a while due to a low budget
i'll keep that recommended one on a list of to look into but i agree it does look slightly wider