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Small black 40mm square CPU fan with three wires

OEM Industries

OEM Industries KDE0504PKB2 40mm CPU cooler 5V 1.0W 3-wire

SKU CH-5ZQV-Q3116

A 40 mm ball-bearing CPU fan running at 5 V and 1.0 W with a three-wire connection

  • ColorBlack
  • TypeFan only
  • Fan Size40mm
  • Bearing TypeBall
  • LEDNo
  • 40 mm fan fits tight chassis spaces
  • Ball bearing reduces friction for longer life
  • 5 V 1.0 W draws minimal power from motherboard header
  • Three-wire connector enables speed monitoring by BIOS
  • Sunon KDE0504PKB2 design built for compact CPU cooling

40 mm DC square cooler for compact builds

The OEM Industries KDE0504PKB2 is a 40 mm square fan rated at 5 V and 1.0 W with a three-wire connection. It uses a ball bearing for reliable rotation and has no LED lighting. The unit is supplied new and is intended for small-form-factor or embedded systems that need a low-profile airflow solution.

Suited for tight enclosures and low-voltage rails

Builders working with 5 V power budgets and limited vertical clearance will find the 4020 form factor a direct fit. The three-wire lead allows speed monitoring but not PWM control. Buyers who need higher static pressure, larger airflow volumes or a four-wire PWM interface should look at something else.

Steady airflow from ball-bearing motor

Under continuous load the ball bearing maintains consistent speed without the wear pattern seen in sleeve designs. The 1.0 W power draw keeps heat contribution minimal inside sealed chassis. With no onboard lighting or variable-speed curve, acoustic output remains stable during extended operation.

Pluspunten

  • 40 mm fan fits tight chassis spaces
  • Ball bearing reduces friction for longer life
  • 5 V 1.0 W draws minimal power from motherboard header
  • Three-wire connector enables speed monitoring by BIOS
  • Sunon KDE0504PKB2 design built for compact CPU cooling

Specificaties

ModelKDE0504PKB2
ColorBlack
TypeFan only
Fan Size40mm
Bearing TypeBall
LEDNo

Vragen over dit artikel

What motherboard header is required to power the 5V 1.0W 3-wire fan?

A 5 V three-pin header supplies the 1.0 W draw; the third wire returns a speed signal so the board can monitor the 40 mm rotor.

Will the 4020 SUNON unit fit the same mounting holes as a standard 40 mm cooler I already own?

Yes, the 40 mm square footprint matches the common 4020 hole pattern, so existing brackets align without modification.

How can I confirm the ball-bearing fan is spinning at the correct speed after installation?

Check the motherboard hardware monitor or BIOS fan-speed read-out; it should report a steady RPM value from the third-wire tachometer signal.

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