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Small black square case fan with four wires

Fans

Fans 4020 12V .13A Double ball bearing 4 wire case fan

SKU CH-GX4C-8GN08

A 40 mm case fan with 12 V power, 0.13 A draw, double ball bearings and a 4-wire PWM connector

  • 12 V operation keeps power draw low at 0.13 A
  • Double ball bearing extends service life under continuous load
  • Four-wire PWM header enables precise speed control
  • Compact 4020 form factor fits tight chassis spaces

4020 12 V 4-wire case fan

This 40 mm square fan runs on 12 V and draws 0.13 A, using a double ball bearing and a four-wire PWM connection for speed control. It is aimed at builders who need a compact airflow source for tight chassis spaces or targeted component cooling.

Straightforward PWM installation

The four-wire plug connects directly to a standard motherboard fan header, so no adapter is required. Double ball bearings tolerate any mounting orientation, but the small frame limits total airflow, so it will not suit builds that demand high static pressure or high-volume cooling.

How it compares

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

Price $21.99
Pricier than about 55% 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 confirm the fan is running at the correct 12V .13A after installation?

Connect the 4-wire PWM header to the motherboard, then monitor the RPM reading in BIOS or fan-control software; a steady speed signal confirms the 12V 0.13A draw is operating normally.

What comes in the box with the EVERFLOW R124020BL 4020 fan and what must I purchase separately?

The package includes the 4020 double ball bearing 4-wire fan only; mounting screws, fan filters or additional PWM cables are not supplied and must be bought separately.

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