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Small black 40mm square fan with 10mm thickness and two wire connector

SunnyStar Co., Ltd

SunnyStar Co., Ltd RDL4010S 40mm 12V CPU cooler

SKU CH-ENVM-V6CEJ

A 40 mm 12 V sleeve-bearing fan with a 2-pin connector for compact case or switch cooling

  • ColorBlack
  • TypeFan only
  • Fan Size40mm
  • Bearing TypeSleeve Bearing
  • Power Connector2 Pin
  • LEDNo
  • Compact 40 mm frame fits tight enclosures
  • 12 V / 0.06 A draws minimal power
  • Two-pin connector enables simple installation
  • Sleeve bearing reduces operating noise
  • Suitable for switch and router cooling

Compact 40mm Fan for Tight Spaces

The SunnyStar RDL4010S is a 40mm square fan designed for small-form-factor cases, network switches and routers where clearance is minimal. Its two-pin 12V connector fits standard headers on older motherboards or embedded boards. The sleeve bearing keeps the unit simple and inexpensive for basic airflow tasks. Buyers needing PWM control or a larger frame should look elsewhere.

Low Power Draw and Modest Airflow

Rated at 12V and 0.06A, the fan draws very little current while spinning in a 4010 form factor. It provides enough airflow for chipset heatsinks, VRM zones or a single-board computer but will not satisfy a high-TDP desktop CPU. The sleeve bearing is adequate for intermittent or low-load use; continuous high-RPM operation may shorten its life. Systems requiring higher static pressure need a thicker or dual-ball-bearing alternative.

Two-Pin 12V Interface Limits

The 2-pin power connector supplies fixed 12V with no speed signal or PWM input, so the fan runs at full speed whenever powered. Motherboard fan headers that expect a tachometer wire will not report RPM, and fan curves cannot be applied. Adapters can convert to three- or four-pin headers, but speed control remains unavailable. Builders who need variable speed or monitoring must choose a three- or four-wire model.

Points forts

  • Compact 40 mm frame fits tight enclosures
  • 12 V / 0.06 A draws minimal power
  • Two-pin connector enables simple installation
  • Sleeve bearing reduces operating noise
  • Suitable for switch and router cooling

Caractéristiques

ModelRDL4010S
ColorBlack
TypeFan only
Fan Size40mm
Bearing TypeSleeve Bearing
Power Connector2 Pin
LEDNo

Questions sur cet article

Will the 40 mm fan fit the 40 mm mounting holes on my older router chassis?

Yes, the fan measures 40 mm square and uses the standard 4010 hole spacing, so it aligns with legacy router and switch brackets.

How can I confirm the sleeve bearing fan is spinning correctly after I connect the 2 pin header?

Power the unit at 12 V and listen for smooth rotation; the 0.06 A draw means a gentle airflow you can feel with your hand near the exhaust.

Does the box include mounting screws or a 3 pin adapter for motherboard headers?

The package contains only the bare 2 wire 2 pin fan; screws and any pin adapters must be sourced separately.

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