Motherboard fan connections?

MRGOOCH

Platinum Member
Feb 6, 2004
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My MB has a 3 pin SYS_Fan1/Power_Fan connection. It is connected from the PSU with a Blu/Blk [ 2 wire ] connector with 3 pins.
I will be changing to a larger PSU and I don't believe it has this wire to make the same connection.
I have tried taking the connection off and checking all fans and they all run.
Will I need to use this connection or can I run without it?
 

Blazer7

Golden Member
Jun 26, 2007
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You will have no problem. Some PSUs have this 2wire 3pin connector but it's there only to report fan rpm, nothing more.
 

MRGOOCH

Platinum Member
Feb 6, 2004
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The wire and connector come from the PSU. Do you still think it has nothing to do with power?
 

Blazer7

Golden Member
Jun 26, 2007
1,136
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81
That's what I said. I use an Enermax Galaxy DXX 1000W that has the same 3pin 2wire connector. The connector is there for rpm monitoring ONLY.