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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.

商品特色

  • 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

商品規格

ModelKDE0504PKB2
ColorBlack
TypeFan only
Fan Size40mm
Bearing TypeBall
LEDNo

商品問答

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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