FormulaMod Fm-PWMHub-3N 12V 3-Pin Fan Hub with High/Low/Off Switch, SATA or D-Type Power

FormulaMod Fm-PWMHub-3N 12V 3-Pin Fan Hub with High/Low/Off Switch, SATA or D-Type Power

TL;DR: The Fm-PWMHub-3N is a compact 45 x 33mm 12V 3-pin fan hub aimed at water-cooling loops that use voltage-controlled fans rather than PWM. Power is taken from a SATA or D-type (Molex) 4-pin connector on the PSU, so the hub never loads the motherboard fan header. A manual switch on the board selects...

Common Applications

The Fm-PWMHub-3N is a compact 45 x 33mm 12V 3-pin fan hub aimed at water-cooling loops that use voltage-controlled fans rather than PWM. Power is taken from a SATA or D-type (Molex) 4-pin connector on the PSU, so the hub never loads the motherboard fan header. A manual switch on the board selects High, Low, or Off for all attached fans simultaneously, which is the simplest possible way to set radiator speed without involving fan-curve software. The footprint is small enough to fit behind the motherboard tray, and an adhesive backing is included for tool-free mounting against the chassis. Suitable for radiator fans and 3-pin water-cooling pumps.

Frequently Asked Questions

Q: Does this hub support PWM control?

A: No. It is built for 12V 3-pin voltage-controlled fans. For 4-pin PWM control, choose the FormulaMod Fm-PWMHub-4N instead.

Q: How is fan speed adjusted?

A: Through the onboard high / low / off switch, which sets the voltage rail for all attached fans.

Q: What are the dimensions?

A: 45 x 33mm, small enough to tuck behind the motherboard tray.

Q: How does it get power?

A: From a SATA or D-type (Molex) 4-pin connector on the PSU. The hub does not draw power from the motherboard.

Q: How is it mounted?

A: An adhesive backing is included so the hub can be stuck directly to the chassis without screws.