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Small black square 40x20mm fan with three wires

OEM Industries

OEM Industries AD0412LB-C52 40x20mm 12V 0.11A CPU cooler

SKU CH-WJX8-RNT64

A 40 mm square fan with ball bearing and three-pin 12 V power for compact CPU cooling

  • Fan size40 mm
  • Bearing designBall
  • Product colorBlack
  • Product typeFan only
  • Compact 40 mm frame fits tight builds
  • Ball bearing ensures long service life
  • 12 V 0.11 A draws minimal power
  • Three-wire tachometer enables speed monitoring
  • 40 x 20 mm footprint suits small-form-factor cases

Compact 40 mm cooler for tight builds

The AD0412LB-C52 is a 40 by 20 mm fan-only cooler that runs on 12 V at 0.11 A through a three-pin connector. Its ball bearing and black frame suit small-form-factor cases or inverter modules where height is limited.

Suits low-profile chassis, not high-heat CPUs

Builders fitting a 1U server, thin client or embedded board will appreciate the slim 20 mm profile and standard three-wire hookup. Systems with high-TDP desktop processors or overclocked chips should look elsewhere because the cooler provides no heatsink mass or heatpipes.

Drops into any 40 mm mount with three-pin power

The unit needs a 40 mm mounting grid and a motherboard or controller header that supplies 12 V on a three-pin plug. It frees vertical clearance above the socket and leaves surrounding RAM slots and VRM heatsinks unobstructed.

How it compares

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

Price $16.99
Cheaper than about 70% 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 nameAD0412 lb-C52
Product colorBlack
Product typeFan only
Size & build
Fan size40 mm
Bearing designBall
More details
LED lightingNo

Questions about this item

What fan header does my motherboard need for the 3-pin connector on this AD0412LB-C52?

A standard 3-pin or 4-pin fan header supplies the 12 V and tachometer signal this cooler requires.

Will the 40 mm frame fit in the same mounting holes as my existing 4020 fan?

Yes, the 40x20 mm dimensions match the 4020 standard, so existing screw holes line up directly.

How can I confirm the ball-bearing fan is spinning at the correct speed after installation?

Check the RPM reading in BIOS or monitoring software; it should report a steady value from the third wire.

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