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Small square black plastic case fan 40 by 40 by 10 mm with two wires

Fans

Fans 4010 U40X12MLZ7-51 40x40x10mm 12V 0.05A 2-line case fan

SKU CH-254J-KRX7V

40 mm square, 10 mm thick 12 V case fan drawing 0.05 A with two-wire power connection

  • Fits tight 40 mm spaces with 10 mm depth
  • Runs on standard 12 V DC power
  • Draws only 0.05 A for low power use
  • Simple two-line connection for easy install

Compact 40 mm DC fan for tight builds

The Fans 4010 U40X12MLZ7-51 is a 40 x 40 x 10 mm case fan that runs on 12 V at 0.05 A using a two-wire power connection. Its square footprint fits small-form-factor chassis, rack-mount appliances and embedded boards where larger fans cannot be installed.

Replaces worn or missing 40 mm two-wire fans

Swap it in when an existing 4010-size fan has failed or when a bare header needs active airflow. The jump is worth it only if the mounting holes match the 40 mm pitch and the system supplies a 12 V two-line header; builders who need PWM control, higher static pressure or a larger frame will need a different solution.

How it compares

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

Price $12.99
Cheaper than about 80% 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

Will the 40 mm square frame with 10 mm depth fit my 4010 mounting holes?

Yes, the fan measures 40 mm by 40 mm and is 10 mm thick, matching the standard 4010 footprint.

How do I connect the two-wire lead to a 12 V header without reversing polarity?

The fan runs on 12 V DC at 0.05 A; connect the red wire to positive and the black wire to negative on the header.

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