EFS-04D12M DC 12V 40mm 2-Wire Server Cooling Fan 40x40x20

EFS-04D12M DC 12V Server Cooling Fan – Compact 40mm Reliable Airflow

Keep your server, PC, or electronics running cool and efficient with the EFS-04D12M DC 12V Cooling Fan. This compact 40×40×20mm axial fan is engineered for consistent, quiet airflow in tight spaces — perfect for servers, desktop PCs, networking equipment, 3D printers, amplifiers, and DIY electronics projects. With a simple 2-wire connection and low 0.12A current draw, installation is straightforward and power consumption is minimal.

Key Features

• Model: EFS-04D12M
• Voltage: DC 12V
• Current: 0.12A (low power draw)
• Dimensions: 40 × 40 × 20mm – slim, space-saving profile
• Connection: 2-wire (simple plug-and-play installation)
• Application: Servers, desktop PCs, network switches, DIY electronics, 3D printers, and amplifiers
• Efficient Airflow: Moves air continuously to prevent heat build-up in enclosed enclosures
• Durable Construction: Built for sustained operation in demanding environments
• Made in Mainland China

Why Choose This Cooling Fan?

Thermal management is critical for the longevity and performance of electronics. The EFS-04D12M's compact 40mm form factor fits standard fan mounting points found on server chassis, PC cases, and electronics enclosures. Its low current draw means it won't strain your power supply, while its steady airflow keeps components at optimal operating temperatures. The 2-wire design makes wiring hassle-free — ideal for hobbyists and professionals alike.

Ideal For

• Server rack cooling
• Desktop PC case ventilation
• Network switches and routers
• 3D printer electronics cooling
• DIY electronics and maker projects
• Amplifiers and AV equipment

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For general guidance on electronics cooling and thermal management best practices, visit the U.S. Department of Energy – Cooling Systems Resource.

Learn more: Fan (machine)

Frequently Asked Questions

Q: What devices is the EFS-04D12M 40mm cooling fan compatible with?

A: The EFS-04D12M is compatible with any device that accepts a standard 40×40×20mm axial fan running on DC 12V. This includes servers, desktop PC cases, network switches, routers, 3D printers, amplifiers, and a wide range of DIY electronics enclosures.

Q: How do I connect the 2-wire cooling fan?

A: The 2-wire design features a positive (+) and negative (–) wire. Simply connect them to a DC 12V power source — red to positive and black to negative. No additional speed controller or tachometer wire is needed for basic operation, making installation quick and straightforward.

Q: What is the power consumption of this fan?

A: This fan draws only 0.12A at 12V DC, giving it an extremely low power consumption of approximately 1.44 watts. This minimal draw means it will not place significant load on your power supply, even when running continuously.

Q: Is this fan suitable for continuous 24/7 operation?

A: Yes. The EFS-04D12M is built with durable construction intended for sustained, continuous use in demanding environments such as server racks and always-on electronics enclosures.