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Black 40x20mm ball bearing fan with two-pin connector

OEM Industries

OEM Industries AD0412MB-C50 40x20mm Ball Bearing Fan

SKU CH-RMHF-T7EGE

A 40x20mm ball-bearing case fan running on 12V 0.08A with a 2-pin connector

  • Fan size40 mm
  • Bearing designBall
  • Power input connector2 Pin
  • Product colorBlack
  • Product typeFan only
  • Compact 40 × 20 mm footprint fits tight chassis
  • Ball-bearing design extends operational lifespan
  • 12 V 0.08 A draw keeps power load low
  • Two-pin connector enables simple motherboard hookup
  • LED-free build avoids unwanted case lighting

Compact 40mm Cooling Fan

The OEM Industries AD0412MB-C50 is a square axial fan measuring 40 by 20 millimetres. It runs on 12 volts at 0.08 amps and uses a two-pin power connector. A dual ball-bearing design supports continuous operation in tight spaces such as small-form-factor cases or inverter enclosures.

Suited for Targeted Airflow Needs

Builders replacing a failed 40mm cooler or adding spot cooling to a constrained chassis will find this unit fits the mounting pattern. It lacks LED lighting and PWM control, so users who want variable speed curves or visual effects should consider other options.

Integrates with Minimal Wiring

The two-wire lead connects directly to a standard 12 volt header on a motherboard or fan controller. No additional adapters or software configuration are required. Its low current draw leaves ample headroom on the fan header for other components in the build.

How it compares

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

Price $15.99
Cheaper than about 80% 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 MB-C50
Product colorBlack
Product typeFan only
Power
Power input connector2 Pin
Size & build
Fan size40 mm
Bearing designBall
More details
LED lightingNo

Questions about this item

What power header does the 2-pin connector on this AD0412MB-C50 plug into?

It connects to any standard 2-pin 12 V fan header on a motherboard or fan controller.

Will the 40 mm frame and 20 mm thickness fit in the same mounting holes as my older 4020 fan?

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

How can I confirm the ball-bearing fan is spinning correctly after installation?

Check the BIOS or monitoring software for a stable RPM reading from the 2-pin header and listen for smooth, quiet rotation.

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