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Five new 40 mm square case fans, 20 mm thick, black frame and blades, three-wire connectors

Fans

Fans 40x40x20mm 3-wire 4020 1.4W KDE1204PKVX case fan

SKU CH-MB6G-Y75KK

A pack of five 40 × 40 × 20 mm three-wire case fans rated at 1.4 W each

  • Compact 40×40×20 mm size fits tight chassis spaces
  • 3-wire connector enables speed monitoring and control
  • 4 W power draw keeps energy use low
  • Supplied as a 5-piece lot for multi-fan setups

40 mm silent case fan 3-wire

These 40 mm by 40 mm by 20 mm fans use a three-wire connection for speed monitoring. The KDE1204PKVX model runs at 1.4 W and is sold in a pack of five. They suit small-form-factor builds or replacement cooling in tight spaces.

Capacity and headroom

Each 4020 fan moves air quietly in confined chassis areas. Headroom is limited by the compact frame and low power draw, so they cannot replace larger high-static-pressure units. Builders needing higher airflow or PWM control should look elsewhere.

How it compares

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

Price $28.99
Pricier than about 72% 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

Will the 3-wire 4020 fan connect to a legacy 3-pin header on an older motherboard?

Yes, the 3-wire connector fits standard 3-pin headers and runs at full 12 V speed without PWM control.

How can I verify the 1.4W KDE1204PKVX is spinning correctly after installation?

Check the BIOS hardware monitor or fan-control software for a reported RPM reading on the corresponding header.

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