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Small black 40 mm square cooling fan with three-pin connector

OEM Industries

OEM Industries MGT4012ZB-R20 40mm fan 12V 12000 RPM 13.8 CFM 30.5 dBA ball bearing 3-pin

SKU CH-A4B5-FRRA9

40 mm 12 V ball-bearing fan delivers 13.8 CFM at 12,000 RPM and 30.5 dBA

  • Fan size40 mm
  • Bearing designBall
  • Power input connector3 Pin
  • Product colorBlack
  • Product typeFan only
  • High airflow in tight spaces with 13.8 CFM at 12000 RPM
  • Quiet operation at 30.5 dBA for low-noise builds
  • Durable dual ball bearing extends service life
  • Standard 3-pin connector fits most motherboard headers
  • Compact 40 × 40 × 20 mm frame suits small-form-factor chassis

Compact 40 mm Cooling Fan

The OEM Industries MGT4012ZB-R20 is a 40 mm DC fan built for confined spaces that demand focused airflow. It runs on 12 V and draws 0.22 A while spinning at 12000 RPM to deliver 13.8 CFM at 30.5 dBA. The two-ball bearing and 3-pin connector suit continuous operation in industrial or embedded chassis.

Who This Suits and Who Should Look Elsewhere

System integrators needing a slim 40 x 40 x 20 mm frame for 1U servers, GPU coolers or networking gear will find the dimensions and airflow match. Builders who require PWM speed control, lower noise at idle or a larger frame for higher static pressure should consider other options.

Deciding Specification: 12000 RPM at 30.5 dBA

The 12000 RPM rating sets both the cooling capacity and the acoustic profile in a single figure. If the target device can tolerate 30.5 dBA at full speed, the airflow meets most compact heatsink requirements; if silence is the priority, the fixed-speed design leaves no headroom for quieter running.

How it compares

Measured against everything we stock in CPU Coolers & Heatsink Fans, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 60% of the 1,559 comparable items (median $19.99).
Fan size 40 mm
Lower than about 90% of the 812 comparable items (median 80 mm).

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Specifications

Product
Model nameMGT4012ZB-R20
Product colorBlack
Product typeFan only
Power
Power input connector3 Pin
Size & build
Fan size40 mm
Bearing designBall
More details
LED lightingNo

Questions about this item

How loud and hot does the 40 mm ball-bearing fan get when it runs continuously at 12000 RPM?

The fan produces 30.5 dBA at 12000 RPM and moves 13.8 CFM; ball bearings handle sustained heat better than sleeve types.

What must my motherboard or controller provide to run this 12 V 0.22 A 3-pin fan?

A standard 3-pin 12 V header supplying at least 0.22 A; no PWM pin is present, so speed is voltage-controlled.

Will the 40×40×20 mm frame and 3-pin connector fit the older CPU cooler I want to keep?

The fan measures 40 mm square by 20 mm thick with a 3-pin plug, matching many legacy 40 mm cooler mounts.

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