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Small black 40mm square fan with 20mm depth and three-pin connector

OEM Industries

OEM Industries EFB0405VHD 40mm 20mm 5V .5A 3 Pin Ball Bearing Fan

SKU CH-7BE2-KD76B

A 40 mm ball-bearing fan for notebooks, switches and routers, running on 5 V .5 A power

  • Fan size40 mm
  • Bearing designBall
  • Power input connector3 Pin
  • LED lightingNon-LED
  • Fan size40 × 40 × 20 mm
  • Product colorBlack
  • 40 mm frame fits tight notebook and router chassis
  • ball bearing motor runs quietly at 5 V 0.5 A
  • three-pin connector reports speed to motherboard
  • 20 mm slim profile clears low-profile heatsinks
  • plain black finish blends into any build

Compact 40 mm Cooling Fan

The OEM Industries EFB0405VHD is a 40 mm square fan with a 20 mm thickness designed for tight spaces. It runs on 5 V power and draws .5 A through a standard three‑pin connector. Ball‑bearing construction supports continuous operation in notebooks, switches or routers.

Suitable For

This unit suits repair technicians and integrators who need a direct replacement for a 40*40*20 mm frame. It is not for builds that require a larger frame, higher airflow or a different voltage header.

Key Specification

The 5 V .5 A three‑pin power interface is the single detail that determines fit. Verify that the target device supplies exactly that voltage and connector before ordering.

How it compares

Measured against everything we stock in CPU Coolers & Heatsink Fans, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 80% of the 1,559 comparable items (median $19.99).
Fan size 40 mm
Lower than about 90% of the 812 comparable items (median 80 mm).

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Specifications

Product
Model nameEFB0405VHD
Product colorBlack
Product typeFan only
Power
Power input connector3 Pin
Size & build
Fan size40 mm
Bearing designBall
More details
LED lightingNon-LED

Questions about this item

Should I choose the 40mm 20mm version or a different size for my notebook or router?

This model is a 40mm by 20mm fan, so verify that your device’s mounting holes and clearance match those dimensions before ordering.

What does the 5V .5A rating mean once the fan is installed in a machine?

It draws 5 volts at 0.5 amps from a 3-pin header, so the host must provide a 5V fan supply capable of delivering that current.

What does the 3-pin connector cap in practice for speed control?

The three pins carry power, ground and a tachometer signal; voltage regulation controls speed, but PWM is not supported on this connector.

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