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Square 40 mm black frame fan with transparent blades and four-wire connector

SXDOOL

SXDOOL 40 mm 12 V 20000 RPM 4-pin case fan

SKU CH-PPMS-3E9JN

A 40 mm case fan with double ball bearing, 26 CFM airflow at 19700 RPM, 54 dB noise, and 4-pin PWM control

  • Bearing designBall
  • Power input connector4 Pin
  • Product typeCase Fan
  • High airflow with 26 CFM for compact cooling
  • 4-pin PWM enables automatic speed regulation
  • Double ball bearing built for long life
  • Runs on 12 V with 4.5-13.8 V operating range
  • 40 mm square frame fits tight spaces

Compact 40 mm high-speed fan

The SXDOOL 40 mm case fan spins at up to 20000 RPM and moves 26 CFM of air through a 40 x 40 x 28 mm frame. It is aimed at builders who need focused airflow in tight spaces such as small-form-factor cases or rack-mount gear.

Ball bearing and four-pin PWM control

Double ball bearings support continuous high-speed operation while the 4-pin connector enables automatic PWM speed regulation between 4.5 V and 13.8 V. Rated current is 0.9 A at 12 V with a noise level of 54 dB.

Check mounting holes and voltage headroom

Verify that your chassis has 40 mm mounting points and that the fan header can supply up to 13.8 V for full speed range. The 28 mm thickness may limit clearance in ultra-slim enclosures.

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

Product
Product typeCase Fan
Power
Power input connector4 Pin
Size & build
Bearing designBall

Questions about this item

What does the 4-pin connector allow on this 40 mm fan?

The 4-pin connector supports PWM automatic speed regulation so the motherboard can vary the fan between 4.5 V and 13.8 V.

What are the exact mounting dimensions for this 40 mm fan?

The frame measures 40 mm by 40 mm and is 28 mm thick with standard corner screw holes.

How is the fan wired for speed control and what mistake should I avoid?

Connect the 4-pin header to a PWM-capable motherboard header; using a 3-pin header will lock the fan at full 20000 RPM.

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