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Square black 40mm frame 10mm thick two wires

Fans

Fans D40SM-12A 40x40x10mm 12V .08A 2-wire case fan

SKU CH-3M3D-B3FVT

A 40mm square, 10mm thick case fan running on 12V at .08A with a two-wire connection

  • Compact 40×40 mm frame fits tight server bays
  • 12 V DC input suits standard PSU rails
  • 08 A draw keeps power use minimal
  • 10 mm thickness slides into slim enclosures

40 mm 12 V server cooler fan

This 40 mm square fan runs on 12 V DC and draws 0.08 A through a two-wire connection. It is built for tight server and appliance chassis where a slim 10 mm profile is required. The compact frame fits standard 40 mm mounting holes in rack equipment and small-form-factor cases.

Two-wire power only — no speed signal

The fan provides constant airflow at full voltage because the two-wire lead lacks a tachometer or PWM control line. Buyers who need motherboard fan-speed monitoring or variable-speed headers cannot use this model. It suits applications that accept fixed-speed cooling without feedback.

How it compares

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

Price $10.99
Cheaper than about 90% 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 much power does the 12 V .08 A rating actually draw in a running system?

At 12 volts and 0.08 amps the fan draws roughly 1 watt, a negligible load for any standard power supply or fan header.

What does the 2-wire connection limit compared with 3- or 4-wire fans?

A 2-wire lead supplies power only, so the motherboard cannot monitor speed or adjust it via PWM; the fan runs at full voltage whenever it is powered.

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