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Square black 40x40mm case fan 20mm thick

Fans

Fans EFB0405HD 4020 5V 0.38A 40x40x20mm case fan

SKU CH-1NAA-JTNCT

A 40 mm square, 20 mm thick server fan running on 5 V at 0.38 A

  • 5 V operation keeps power draw low at 0.38 A
  • 40 × 40 × 20 mm frame fits tight server bays
  • Taiwan build targets long service in continuous use
  • Drop-in match for Delta 4020 units

Compact 5 V server fan

The Fans EFB0405HD 4020 is a 40 mm square, 20 mm thick case fan that runs on 5 V and draws 0.38 A. It is built as a direct replacement for Delta units in tight server chassis or industrial enclosures where a slim profile and low voltage are required.

Suited for maintainers refreshing legacy 40 mm bays

This fan fits existing 4020 mounting holes and 5 V headers, making it a drop-in spare for identical frames. Not for builders who need PWM speed control, higher static pressure, or larger mounting patterns.

How it compares

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

Price $13.99
Cheaper than about 70% 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

Is this the only voltage and frame size available for the EFB0405HD?

The listing specifies a single 5 V version in a 40x40x20 mm frame, so no other voltage or size options are shown for this model.

What does the 0.38 A current rating mean once the fan is installed?

At 5 V the fan draws 0.38 A, so a standard 5 V motherboard or fan controller header can supply the required power.

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