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Two 40 by 40 by 20 mm three-wire case fans

Fans

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

SKU CH-E840-PX6WE

Two 40 mm square case fans with three-wire control and 1.4 W draw

  • Compact 40 × 40 × 20 mm fits tight builds
  • 3-wire connection enables speed monitoring
  • Low 1.4 W draw keeps power use minimal
  • Supplied as a 2-piece set for dual cooling

Compact 40 mm case fan pair

Two 40 mm by 20 mm fans with a three-wire connection suit tight chassis spaces and low-power cooling needs. Each unit draws 1.4 W and carries the KDE1204PKVX designation for silent operation. The pair is supplied new and original.

Limited by three-wire control

Three-wire fans report speed but cannot accept PWM duty-cycle commands from modern headers. Motherboards that only offer four-pin PWM outputs will run these fans at full voltage continuously. Buyers who need variable speed tied to temperature curves should select a four-pin model instead.

How it compares

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

Price $15.99
Cheaper than about 63% 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

Should I buy the 2-pack or look for a single 4020 fan?

The listing ships two identical 4020 fans together, so you receive a pair ready for dual-fan setups or a spare.

What does the 1.4 W rating tell me about airflow inside my case?

At 1.4 W the fan draws minimal current from a 3-wire header while still providing quiet cooling for tight 40 mm spaces.

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