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Small black 40 by 20 mm case fan with two wires

Zyvpee

Zyvpee GM1204PKV3-A 40*20mm 12V .5W 2-wire case fan

SKU CH-FEQQ-VV575

A compact 40 by 20 millimetre 12 volt case fan with two-wire power and dual ball bearings for reliable airflow

  • TypeCase Fan
  • CompatibilityCase
  • Bearing Type2 Ball
  • Power Connector2 wires
  • ColorBlack
  • LEDNon-LED
  • Compact 40×20 mm footprint fits tight chassis spaces
  • Dual ball-bearing design extends operational lifespan
  • Low 0.5 W draw minimises power-supply load
  • 12 V two-wire power simplifies installation
  • Non-LED black frame keeps builds distraction-free

40 mm DC axial fan for compact cases

This Zyvpee GM1204PKV3-A fan measures 40 by 20 mm and runs on 12 V at .5 W. It uses a two-wire power connector and a 2 Ball bearing. The black, non-LED frame suits small form-factor builds and tight CPU cooler clearances where a slim 40 mm profile is required.

Installation ease and common issues

The two-wire lead connects directly to a 12 V header or molex adapter, so no PWM control or speed reporting is available. Polarity must be observed; reversing the wires will prevent the fan from spinning. The thin 20 mm depth fits most 40 mm mounts, but screw holes on some proprietary brackets may not align with the standard spacing.

Limits of the 12 V two-wire interface

Voltage is fixed at 12 V, so the fan always runs at full speed and cannot be throttled by the motherboard. Speed regulation requires an external voltage reducer or resistor cable, which adds wiring complexity. The .5 W draw is low, yet the lack of a tachometer signal means the system cannot monitor fan health or trigger alerts if the rotor stalls.

Highlights

  • Compact 40×20 mm footprint fits tight chassis spaces
  • Dual ball-bearing design extends operational lifespan
  • Low 0.5 W draw minimises power-supply load
  • 12 V two-wire power simplifies installation
  • Non-LED black frame keeps builds distraction-free

Specifications

BrandZyvpee
SeriesGM1204PKV3-A
ModelGM1204PKV3-A
TypeCase Fan
CompatibilityCase
Bearing Type2 Ball
Power Connector2 wires
ColorBlack
LEDNon-LED
FeaturesDC axial fan
Dimensions40*20mm

Questions about this item

How do I verify the GM1204PKV3-A is spinning correctly after installation?

Power the system and confirm the fan rotates smoothly; the 2‑ball bearing should run quietly at 12 V with a .5 W draw.

What comes in the box and what must I source separately?

The package contains the 40 × 20 mm black DC axial fan with a 2‑wire lead; mounting screws and a 12 V header or adapter are not included.

Which version of the GM1204PKV3-A should I choose for my build?

Only the single 12 V .5 W 2‑wire variant in 40 × 20 mm is offered, so select this model when a compact non‑LED case fan is required.

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