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Black 120mm square frame fan 38mm thick three wire lead

OEM Industries

OEM Industries FD241238MB 12038 24V CPU cooler

SKU CH-WSFN-QHKGE

A 120 mm ball-bearing case fan running at 24 V with a three-wire connection

  • ColorBlack
  • TypeFan only
  • Fan Size120mm
  • Bearing TypeBall
  • LEDNo
  • 24V 0.25A rating delivers efficient cooling power
  • Ball bearing design ensures long operational life
  • 120mm × 38mm frame fits standard mounting points
  • Three-wire connector enables speed monitoring and control
  • Black finish suits professional and custom builds

120 mm Ball-Bearing Cooler

The OEM Industries FD241238MB is a 120 mm square fan with a 38 mm frame depth, designed to move air through a heatsink or case. It runs on a 24 V supply drawing 0.25 A and uses a three-wire connection for speed reporting. The black housing contains a ball bearing for consistent rotation.

Suited for 24 V Systems Only

This cooler fits builds that already provide a 24 V fan header or an external 24 V source, such as certain industrial chassis or server enclosures. It is not for standard desktop motherboards that supply only 12 V, nor for anyone needing PWM speed control or LED illumination.

Single-Fan Airflow Capacity

The unit delivers the airflow of a single 12038 ball-bearing fan, which is adequate for modest thermal loads in a ventilated case. It runs out of headroom when cooling high-TDP processors or when static pressure must overcome dense fin stacks or restrictive filters.

Highlights

  • 24V 0.25A rating delivers efficient cooling power
  • Ball bearing design ensures long operational life
  • 120mm × 38mm frame fits standard mounting points
  • Three-wire connector enables speed monitoring and control
  • Black finish suits professional and custom builds

Specifications

ModelFD241238MB
ColorBlack
TypeFan only
Fan Size120mm
Bearing TypeBall
LEDNo

Questions about this item

What motherboard header voltage must my board provide for the FD241238MB to run?

The fan requires a 24 V header, so your motherboard or fan controller must supply 24 V on the 3-wire connector.

Can I use the 12038 cooler on a board that only has 12 V fan headers?

No, the FD241238MB is rated for 24 V at 0.25 A; connecting it to a 12 V header will not power it correctly.

How do I confirm the ball-bearing fan is spinning at the intended speed after installation?

With the 3-wire tachometer signal connected, check the RPM reading in BIOS or monitoring software — it should report a steady speed consistent with a 24 V 120 mm ball-bearing fan.

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