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Small square 40mm black cooling fan with three wires

Fans

Fans 109P0405H906 40x40x10mm case fan

SKU CH-6VMF-6SHK3

A 40 mm square, 10 mm thick 5 V case fan drawing 0.16 A with three-wire speed reporting

  • 5 V operation keeps power draw low at 0.16 A
  • 40 mm square frame fits tight chassis spaces
  • Three-wire connection enables speed monitoring
  • 10 mm slim profile suits low-clearance builds

Compact 40 mm case fan for tight builds

This 40 mm square fan fits small-form-factor cases and rack-mount enclosures where larger units cannot be installed. It runs on a 5 V supply and draws 0.16 A through a three-wire connection for speed monitoring. The 10 mm thickness keeps clearance minimal while still moving air across restricted layouts.

Low-draw thermal management with three-wire control

At 5 V and 0.16 A the motor adds little load to a system’s power budget and runs quietly in typical chassis positions. The three-wire lead allows the motherboard or controller to read RPM and adjust voltage for balanced cooling. Its slim profile suits dense component stacks without blocking adjacent slots or cables.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 85% of the 8,339 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How do I install the 109P0405H906 fan in a 40 mm mounting frame and what step do people get wrong?

Align the 40 mm square frame with the mounting holes, then connect the three-wire lead to a 5 V header; the common mistake is reversing the polarity of the 0.16 A power line.

What maintenance will the 109P0405H906 need over its service life?

Periodically clean dust from the 40x40x10 mm blades and check the three-wire connector for secure seating; replace the unit if bearing noise appears or airflow drops.

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