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Black 40mm square fan with three wires

OEM Industries

OEM Industries 9GV0312G3D04 40mm 12V 0.4A 3-Wire CPU Cooler

SKU CH-69F4-EASBA

A 40 mm ball-bearing fan delivers 12 V, 0.4 A cooling with a three-wire connection

  • Fan size40 mm
  • Bearing designBall
  • Product colorBlack
  • Product typeFan only
  • 40 mm compact fan fits tight build spaces
  • Ball bearing motor runs quietly at 12 V 0.4 A
  • 3-wire connector enables speed monitoring
  • SANYO 3828 design built for reliable cooling
  • Black finish matches dark-themed systems

Compact 40 mm Fan for Targeted Cooling

The OEM Industries 9GV0312G3D04 is a 40 mm square DC fan designed for small-form-factor systems or localized airflow. It runs on 12 V and draws 0.4 A through a three-wire connection, making it suitable for tight builds where space is limited.

Ball-Bearing Build with Simple Three-Wire Hookup

A ball bearing supports the rotor for consistent rotation and long service life in continuous operation. The black frame carries no LED lighting, keeping the unit visually neutral. Three wires provide power and a tachometer signal so the motherboard can monitor fan speed without PWM control.

Direct Replacement for SANYO 3828 Units

This model matches the original SANYO 3828 specifications, so it fits existing mountings that use the same 40 mm footprint and three-pin header. The upgrade is worthwhile when the original fan has become noisy or failed, and a like-for-like swap restores reliable airflow without rewiring.

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 name9GV0312G3D04
Product colorBlack
Product typeFan only
Size & build
Fan size40 mm
Bearing designBall
More details
LED lightingNo

Questions about this item

What voltage and current does the 3-wire 9GV0312G3D04 fan draw?

The fan runs on 12 V and draws 0.4 A through its three-wire lead.

What mounting holes does the 40 mm square frame use?

The 40 mm square frame follows the standard 40 mm fan hole pattern for direct case or heatsink mounting.

How do I connect the three wires so speed reporting works?

Match the three leads — power, ground and tach — to the motherboard 3-pin header; reversing power and ground stops the fan and loses RPM signal.

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