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Small black 40mm square case fan with maglev bearing and four-pin connector

Zyvpee

Zyvpee U40G12BS4AB5-57 A251 40mm 4 Pin Maglev Case Fan

SKU CH-YVFF-P209R

A 40 mm maglev case fan with a 4-pin PWM connector for precise speed control

  • TypeCase Fan
  • CompatibilityCase
  • Bearing TypeMaglev
  • Power Connector4 Pin
  • ColorBlack
  • LEDNon-LED
  • Maglev bearing reduces friction for quieter operation
  • 4-pin PWM connector enables precise speed control
  • NIDEC 4020 motor delivers reliable 12 V performance
  • Compact 40 × 20 mm frame fits tight chassis spaces
  • Non-LED black design keeps builds clean and distraction-free

Compact 40 mm Maglev Fan

The Zyvpee U40G12BS4AB5-57 A251 is a 40 mm case fan built around a NIDEC 4020 motor with magnetic-levitation bearing. It targets builders who need a slim 20 mm thick cooler for tight chassis spaces or small-form-factor enclosures. The 4-pin PWM connector allows motherboard speed control without extra adapters. Its non-LED black frame keeps the look neutral for any build theme.

Fits 40 mm Mounts with Four-Pin Headers

The fan mounts directly to standard 40 mm hole patterns and draws 0.12 A at 12 V through its 4-pin connector. No separate fan controller or Molex adapter is required when a PWM header is available. The Maglev bearing eliminates physical contact, reducing friction and freeing up long-term reliability compared with sleeve or ball bearings. Builders without a 4-pin header or with only 40 mm clearance in other axes cannot use this unit.

Steady Airflow from Magnetic Bearing

Under continuous load the Maglev design maintains consistent rotation without the wear-in period that affects contact bearings. The 12 V 0.12 A rating delivers stable current draw so motherboard fan curves remain predictable over extended sessions. Acoustic output stays uniform because the rotor floats without mechanical resonance. The thin 20 mm profile limits maximum static pressure, so dense radiator stacks are not a suitable match.

Priekšrocības

  • Maglev bearing reduces friction for quieter operation
  • 4-pin PWM connector enables precise speed control
  • NIDEC 4020 motor delivers reliable 12 V performance
  • Compact 40 × 20 mm frame fits tight chassis spaces
  • Non-LED black design keeps builds clean and distraction-free

Specifikācijas

BrandZyvpee
SeriesU40G12BS4AB5-57
ModelU40G12BS4AB5-57
TypeCase Fan
CompatibilityCase
Bearing TypeMaglev
Power Connector4 Pin
ColorBlack
LEDNon-LED
FeaturesDC Cooling Fan
Dimensions40*20mm

Jautājumi par šo preci

How long can the 40 mm Maglev fan run before the 12 V 0.12 A motor hits its thermal limit?

The 12 V 0.12 A rating is the continuous operating point, so the motor is designed to run at that load indefinitely without exceeding its thermal limit.

What noise level does the Maglev bearing produce when the 4020 fan spins at full speed all day?

Maglev suspension removes physical contact between rotor and stator, keeping friction noise low during sustained operation.

Which motherboard header is required to power and control this 4-pin 12 V case fan?

A standard 4-pin PWM header supplying 12 V is needed; the fourth wire carries the speed-control signal.

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