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Black 40mm square case fan with four-pin PWM connector

Zyvpee

Zyvpee PSD1204PQBX-A 40mm 12V 9.6W 4-pin PWM case fan

SKU CH-JG28-RT40D

40 mm dual-ball-bearing axial fan with 4-pin PWM control runs at 12 V and draws 9.6 W

  • Bearing design2 Ball
  • Power input connector4 Pin
  • LED lightingNon-LED
  • Product typeCase Fan
  • Compatible withCase
  • Product colorBlack
  • Precise speed control via 4-pin PWM connector
  • Reliable 2-ball bearing for continuous server duty
  • Fits Dell T705N with 40×40×28 mm frame
  • 12 V 9.6 W power draw matches original spec
  • Compact 40 mm axial design for tight chassis spaces

Compact 40 mm server cooler

This 40 mm axial fan is built for tight server chassis such as the Dell T705N. It runs on 12 V power and draws 9.6 W through a 4-pin PWM connector for speed control. The dual ball bearing supports continuous operation in demanding environments.

Replaces original Sunon unit

The PSD1204PQBX-A matches the Sunon 4028 (2).B3936.F.GN specification used in factory configurations. Swapping a failed or noisy OEM fan restores intended airflow without modifying mounting points. The upgrade is worth it when the original bearing wears out or acoustic levels rise.

Verify connector and clearance

Confirm the motherboard or fan header provides a standard 4-pin PWM socket and 12 V supply. Measure the available depth to ensure the 28 mm thickness fits alongside adjacent components. Check that the four-wire pinout aligns with the system's pin assignment before ordering.

How it compares

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

Price $24.99
Pricier than about 63% of the 8,339 comparable items (median $19.99).

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Specifications

Product
Product linePSD1204PQBX-A
Model namePSD1204PQBX-A
Product typeCase Fan
Product colorBlack
Power
Power input connector4 Pin
Size & build
Bearing design2 Ball
Product dimensions40 × 40 × 28 mm
Compatibility
Compatible withCase
More details
LED lightingNon-LED

Questions about this item

Will the 40mm by 40mm frame with 28mm depth fit my Dell T705N server chassis?

The fan measures 40mm square by 28mm thick, matching the Dell T705N mounting pattern for a direct swap.

How do I connect the four-wire PWM lead to the server motherboard header?

Align the 4-pin connector with the motherboard PWM header; the keyed shroud prevents reverse insertion, which is the common mistake.

When should I expect to replace the dual-ball bearing assembly?

Dual-ball bearings typically run for years; replace the fan once audible rumble or speed drop appears under load.

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