Motherboard (CPU) 3 Pin Fan Connector Connector Pinout - AllPinouts
3 Pin Fan connector used on the ATX Motherboard.
|2||+12VDC or +5VDC||red|
- 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: