This website uses only session cookies and does not use profiling cookies for the purposes of sending targeted advertisements. However, this site uses "third parties" cookies installed by different services than the site you are visiting. To disable the third-party profiling cookies, please visit the following links: AddThis Targeting Opt-Out, Google Ads Settings and Amazon Advertising Preferences. By using this website, you agree to our use of cookies.

Motherboard (CPU) 3 Pin Fan Connector Connector Pinout - AllPinouts

From AllPinouts
Jump to: navigation, search


3 Pin Fan connector used on the ATX Motherboard.

3 pin fan connector
3 PIN IDC FEMALE at the fan and 3 PIN IDC MALE header at the motherboard.


Pin Name Color
1 GND black
2 +12VDC or +5VDC red
3 Tachometric Signal yellow


Notes

  • Not all fans or motherboards control or power the fan assemblies the same way.
  • Fans may be either 5 Volt DC or 12 Volt DC fans.
  • Colors may change.
  • Chassis and CPU fans may use either 3-pin or 4-pin power connectors. 3-pin connectors are usually used for the smaller chassis fans with lower power consumption. 4-pin connectors are usually used by CPU fans with higher power consumption. Fans and on-board fan headers are backwards compatible. Proper fan connector placement is shown in the figures below:
    • Fan has a 3-pin power connector; desktop board has a 4-pin fan header:
      Connector mbfanpwm 3to4pin.png
      Note: when using a 3-pin power connector with a 4-pin fan header, the fan will always be on; there is no fan control.
    • Fan has a 4-pin power connector; desktop board has a 3-pin fan header:
      Connector mbfanpwm 4to3pin.png


References



Personal tools
Follow AllPinouts on Twitter
AllPinouts is owned by Tecnick.com LTD, the content is available under GFDL.