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Square 120mm server fan 38mm thick with four-wire connector

Fans

Fans YY12038M12B 120x120x38mm 12V 2.75A 4-Wire case fan

SKU CH-9XWH-76KWV

A 120 mm square case fan with 38 mm depth, 12 V power and a 4-wire PWM connector for precise speed control

  • High airflow for dense builds with 120 mm square frame
  • Strong 12 V, 2.75 A motor drives heavy cooling loads
  • 38 mm thickness fits deep-chassis server enclosures
  • 4-wire PWM header enables precise speed control

High-Airflow 120 mm Server Fan

This 120 mm square fan is built for server chassis and workstations that demand strong, directed airflow. It runs on 12 V DC and draws 2.75 A, delivering the pressure needed for dense component layouts. The 38 mm thickness allows a larger motor and blade surface than standard slim fans. It suits administrators who need reliable cooling in rack-mounted or tower enclosures.

PWM 4-Wire Speed Control

The four-wire connector enables pulse-width modulation so the motherboard or fan controller can adjust speed precisely to thermal load. This keeps noise lower at idle while providing full airflow under heavy compute tasks. Builders using three-pin headers will lose automatic speed regulation and should verify connector compatibility before ordering.

Highlights

  • High airflow for dense builds with 120 mm square frame
  • Strong 12 V, 2.75 A motor drives heavy cooling loads
  • 38 mm thickness fits deep-chassis server enclosures
  • 4-wire PWM header enables precise speed control

Specifications

No published specifications for this item yet.

Questions about this item

How much current does the 12 V, 2.75 A rating draw in a live system?

The fan pulls up to 2.75 A on the 12 V rail, so your power supply must reserve that much current for each unit installed.

What does the 4-wire PWM interface actually control on this fan?

The fourth wire carries the PWM signal that lets the motherboard vary speed precisely, while the third wire reports the real-time RPM back to the BIOS.

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