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Small square 40mm black fan with four wires and 18cm lead

SXDOOL

SXDOOL TAA0412DX01 40x40x20mm 12V 0.9A 15000 RPM PWM case fan

SKU CH-QN9K-7TKA5 MPN TAA0412DX01

A 40 mm double ball-bearing fan runs at 15000 RPM with PWM speed control and a four-wire 18 cm lead

  • Double ball bearing reduces wear for longer service life
  • 15000 RPM delivers strong airflow in a compact 40x40x20mm frame
  • PWM temperature control adjusts speed automatically to match thermal load
  • 4-wire 18cm lead with speed reporting enables precise motherboard monitoring

Compact 40 mm PWM Fan for Tight Server Builds

This 40 mm by 40 mm by 20 mm Delta fan fits cramped 1U chassis and small-form-factor enclosures where larger coolers cannot mount. It runs on 12 V and draws 0.9 A, delivering 15000 RPM through a double ball bearing for long service life. The four-wire lead includes PWM temperature control and speed measurement, letting the system adjust airflow automatically.

High-Speed Cooling with 18 cm Lead Length

The 15000 RPM top speed moves significant air through dense heatsinks or restricted venting, but the small frame limits static pressure against very dense fin stacks. The 18 cm cable reaches nearby headers on compact boards yet may fall short in larger cases without an extension. Buyers needing quiet low-RPM operation or higher static pressure for radiator mounts should look elsewhere.

Ciri-ciri utama

  • Double ball bearing reduces wear for longer service life
  • 15000 RPM delivers strong airflow in a compact 40x40x20mm frame
  • PWM temperature control adjusts speed automatically to match thermal load
  • 4-wire 18cm lead with speed reporting enables precise motherboard monitoring

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Will the 40 mm fan fit the mounting holes on my older 40 mm cooler?

The fan measures 40 mm by 40 mm with a 20 mm thickness, matching the standard 40 mm square mounting pattern used on many legacy coolers.

How can I confirm the PWM speed control is active after I plug in the four-wire connector?

The motherboard BIOS or fan-control software should report a variable RPM reading up to 15000 RPM that changes with the PWM duty cycle, proving the speed-measurement and temperature-control functions are working.

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