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Two 40 mm square fans with black frames and clear blades

Ruth's sister

Ruth's sister internal power cable 2PCS 4020 12V 0.6W

SKU CH-K5BY-W8MYY

Two 40 mm maglev fans run at 12 V and 0.6 W each for quiet case cooling

  • Two MagLev fans run near-silently for quieter builds
  • 40×40×20 mm frame fits tight 4020 slots
  • 12 V, 0.6 W draw keeps power use low
  • Sunon HA40201V4-0000-C99 model ensures proven reliability

Two 4020 fans with maglev bearings

This pair of Sunon HA40201V4-0000-C99 fans measures 40 by 40 by 20 millimetres each. They run on 12 volt DC power and draw 0.6 watts per unit. The maglev bearing is designed for quiet operation in tight chassis spaces.

Cooling capacity and limits

The 0.6 watt rating suits low-heat components such as chipset heatsinks or small-form-factor enclosures. Builders needing higher airflow for CPU or GPU cooling will find these fans insufficient.

Highlights

  • Two MagLev fans run near-silently for quieter builds
  • 40×40×20 mm frame fits tight 4020 slots
  • 12 V, 0.6 W draw keeps power use low
  • Sunon HA40201V4-0000-C99 model ensures proven reliability

Specifications

No published specifications for this item yet.

Questions about this item

Will the 4020 fan fit in the same 40 mm mounting holes as my old 40 mm fan?

Yes, the 40 mm square frame matches standard 40 mm mounting patterns so existing screw holes line up.

How can I confirm the 12 V 0.6 W fan is running at full speed after installation?

Connect the fan to a 12 V header and listen for the Maglev bearing's quiet hum; the low 0.6 W draw means minimal vibration when spinning correctly.

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