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Small black square 40mm frame fan with three wires

Fans

Fans EFB0405VHD 4020 40x40x20mm 5V 0.50A case fan

SKU CH-SQX3-2Y4QV

40 mm square, 20 mm thick 5 V case fan drawing .50 A with three-wire speed monitoring

  • Compact 40x40x20mm frame fits tight server chassis
  • 5V 0.50A three-line drive powers Delta-compatible replacement
  • New condition ensures reliable airflow from first spin
  • 4020 form factor matches standard 4cm mounting points

Compact 5 V case fan

This EFB0405VHD 4020 fan measures 40 by 40 by 20 mm and runs on a 5 V supply drawing 0.50 A. It uses a three-wire connection that provides speed feedback to the host system. The unit is supplied new and is intended for server chassis or small-form-factor enclosures.

Suited for 5 V three-pin headers

Builders who need a low-voltage fan with tachometer output for a 40 mm mounting grid will find it a direct fit. It is not for systems that supply only higher-voltage fan power or that rely on two-pin connectors without speed reporting.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 85% of the 8,339 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Does the EFB0405VHD 4020 fan ship with mounting screws or a power adapter?

The listing covers a single 40×40×20 mm 5 V 0.50 A three-wire chassis fan; screws and adapters are not included.

Which connector variant should I pick for a 5 V three-pin header?

The EFB0405VHD 4020 uses a three-wire lead designed for standard 5 V three-pin fan headers.

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