Pinouts >  Motherboard connectors
3 pin IDC male connector layout
3 pin IDC male connector
at the motherboard

Pin

 Name
1 GND (Black)
2 +12V (Red)
3 Sense (Yellow or Blue): spin sensor

 

Fans with three pin connectors Must Be Used on 3 pin CPU-Fan pinouts.  

The #3 pin senses fan RPM (revolutions per minute). When no revolutions are sensed by the system, an audio alarm &/or no system boot will occur, warning the user &/or preventing proccessor overheating and burnout. Typically, the motherboard is required to pull the pin up through a resistor, with the fan connecting it to ground once (or more) per revolution.

Other 3 pin fan connectors, such as case fan connectors may use a fan with a 2 pin plug (12v+ & Gnd ). RPM notification is not important on those connectors.

No alarm or boot prevention is associated with these.

3 pin motherboard fan connector layout
3 pin motherboard fan  connector
at the fan cable
Pinout status: +31 -2
According to 37 reports in our database (31 positive and 2 negative) the Motherboard 3 pin CPU or Case Cooling fan connector pinout should be correct.

Is this pinout
NO DIY devices
Motherboard 3 pin CPU or Case Cooling fan connector visual pinout:click to enlarge
Source(s) of this and additional information: ASUS Motherboard Manual Rob Gill
Copyright © 2000-2024 by pinouts.ru team, except user uploaded images.
No portion of this webpage may be reproduced in any form without visible link to pinouts.ru .
Efforts have been made to ensure this page is correct, but it is the responsibility of the user to verify the data is correct for their application.
Change privacy settings