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Small square 40mm PWM case fan with black frame and blades

Fans

Fans 4020 40x40x20mm 12V .50A PWM case fan

SKU CH-HCYY-NNTFT

A 40 mm square, 20 mm thick PWM case fan running at 12 V and 0.50 A

  • PWM speed control adjusts cooling to demand
  • 40 mm square frame fits tight spaces
  • 20 mm thickness suits slim builds
  • 12 V .50 A draws minimal power

Compact 40 mm PWM Case Fan

This 40 mm square case fan measures 40 mm by 40 mm by 20 mm and runs on 12 V with a .50 A current draw. PWM speed control lets the system adjust rotation automatically for targeted airflow in tight spaces.

Verify Mounting Holes And Header

Confirm your chassis or heatsink has 40 mm mounting points and that your motherboard or controller provides a four-pin PWM header for speed regulation. The fan draws .50 A at 12 V so ensure the header can supply that current.

How it compares

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

Price $9.99
Cheaper than about 91% 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

Does the 40x40x20mm fan ship with mounting screws or a PWM cable, or must I buy them separately?

The fan is supplied as the DBTA0420B2U unit only; mounting hardware and any extension cables are not included and must be sourced separately.

The listing shows a 12V 0.50A PWM model — are there other voltage or current versions of the 4020 I should consider?

Only the 12V 0.50A PWM variant is offered; no alternative voltage or amperage versions of this 4020 frame size are available.

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