4 pin cpu fan connector on 3 pin motherboard

[tmslaw]

I just installed an Opteron 185 with the included fan/heatsink on an Asus A8N-SLI Deluxe motherboard. The fan has a 4 pin connector but the motherboard only has a 3 pin connector for a cpu fan. The cpu and motherboard are supposed to be compatable. Can anything be done short of buying a 3 pin fan?

 

[craftech]

For 4-pin there is GND, +12V, RPM, CONTROL

For 3-pin there is GND, +12V, RPM

Shift the plug over.

Or make one by removing pins and rearranging them in a different hole.


Some headers take both 3-pin and 4-pin plugs anyway depending upon the motherboard.

John

 

[gba]

I experienced the opposite senario with an ASUS M2NPV-VM. There was no mention in the manual of the four pin header. I shifted the three pin fan plug, leaving the control pin on the MB unused.