After installing a new motherboard and processor I still had a perfectly 
good and venerated Socket A MB, CPU and memory. I got a cheep case and, 
using a retired power supply and some old hard drives, built a spare 
computer system. The PS is a Coolmax of 460 watt capacity. The PS fan 
now makes a louder noise than I remember it doing in the past.

The MB has three 3-pin male sockets for fans, one labeled CPU, one 
system fan, and one just fan. The first two have the pins marked +, -, 
and sensor. The third has + and -, but NC for the third pin (which I 
suppose means no connection). A problem is that the CPU fan has two 
female plugs, on with + and - leads, and a single wire cable with the 
sensor lead. I plugged this in to the MB receptacles for CPU and System 
fans. I now have nowhere to plug in the single wire sensor lead from the 
PS. Could that be why it is always so loud? Should I splice it into the 
sensor lead of the CPU's fan?

Martin Rosenfeld


 
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