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Small black square 40mm case fan with three wires

SXDOOL

SXDOOL COFAN F-4008H12BIV 12V 0.18A 40mm 3-wire case fan

SKU CH-2EHB-A84G1

A 12 V 0.18 A 40 mm three-wire case fan with 37 mm diameter and 22 mm by 29 mm mounting holes

  • Compact 37 mm frame fits tight chassis spaces
  • 12 V, 0.18 A draws minimal power from the PSU
  • 3-wire connector enables RPM monitoring by the motherboard
  • Mounting holes spaced 22 mm by 29 mm suit standard 40 mm patterns
  • COFAN 4008 model built for reliable case airflow

Compact 40 mm case fan

The SXDOOL COFAN F-4008H12BIV is a 12 V, 0.18 A axial fan designed for tight chassis locations. Its 37 mm frame fits small-form-factor cases, industrial enclosures and embedded boards where larger fans cannot mount. The three-wire connector provides tachometer feedback so the system can monitor rotor speed. Builders needing a low-profile airflow source for restricted spaces will find it suitable.

12 V 0.18 A headroom

At the rated 12 V and 0.18 A the fan delivers its specified airflow for component cooling and general ventilation. Running at lower voltages reduces speed and noise but also cuts static pressure, limiting effectiveness against dense heatsinks or restrictive filters. The motor draws modest current, so it can be powered from standard motherboard headers or fan controllers without overloading them. It is not intended for high-static-pressure applications such as thick radiators.

Three-wire tachometer lead

The bundled three-wire cable adds a speed-sense line to the usual power and ground conductors. This allows the motherboard or a fan controller to report real-time RPM and trigger alerts if the rotor stalls. No PWM wire is present, so voltage regulation — not duty-cycle control — is the only way to adjust speed. No mounting screws, adapters or software utilities are included with the fan.

Punti di forza

  • Compact 37 mm frame fits tight chassis spaces
  • 12 V, 0.18 A draws minimal power from the PSU
  • 3-wire connector enables RPM monitoring by the motherboard
  • Mounting holes spaced 22 mm by 29 mm suit standard 40 mm patterns
  • COFAN 4008 model built for reliable case airflow

Caratteristiche tecniche

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Domande su questo articolo

Will the 3-wire 12V 0.18A connector work with my older 3-pin motherboard header?

Yes, the three-wire plug fits a standard 3-pin 12 V header and draws 0.18 A, so the board can read its speed signal.

How can I verify the COFAN F-4008H12BIV is spinning correctly after installation?

Check the BIOS or monitoring software for an RPM reading on the corresponding fan header; a steady value confirms the tachometer wire is active.

Does the package include mounting screws for the 22 mm by 29 mm hole pattern?

Only the fan is supplied; screws to match the 22 mm × 29 mm mounting holes must be purchased separately.

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