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Small black square 40mm frame 28mm thick three-pin connector

SXDOOL

SXDOOL 109P0412J3063 40mm 12V 3-pin case fan 4028

SKU CH-HYPF-SNRE6

A 40 × 40 × 28 mm DC 12 V case fan with a 3-pin connector and 0.35 A draw

  • Product typeCase Fan
  • Compact 40 × 40 × 28 mm footprint fits tight server bays
  • 12 V DC power with 0.35 A draw keeps energy use low
  • Three-pin header enables motherboard speed monitoring
  • High-speed 4028 design moves air efficiently for CPU and switch cooling

Compact 40 mm 12 V case fan for tight builds

This SXDOOL 109P0412J3063 measures 40 mm square and 28 mm deep, running on 12 V DC with a 3-pin connector for motherboard speed reporting. It suits small-form-factor PCs, server blades or network switches where a 4028 frame is the only option. Builders who need a larger frame or PWM control cannot use this model.

Thermal, noise and power profile

At the rated 0.35 A draw the fan consumes just over 4 W from a 12 V rail, a modest load for any standard header. The 3-wire interface allows the board to monitor RPM, but without PWM the speed stays constant, so acoustic output does not vary with load. Users who require variable-speed curves or lower idle noise should look elsewhere.

How it compares

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

Price $8.99
Cheaper than about 92% of the 8,339 comparable items (median $19.99).

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Specifications

Product
Product typeCase Fan

Questions about this item

How do I connect the 3-pin plug to the mainboard header?

Align the keyed 3-pin connector with the motherboard fan header and press straight down; the third wire carries the speed signal so the board can monitor RPM.

What maintenance will the 4028 12 V fan need over time?

Dust the blades and frame every few months with compressed air; the sleeve bearing is not user-serviceable, so plan to replace the unit if noise or vibration appears.

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