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Square 140mm cooling fan with black frame and six-wire connector

SXDOOL

SXDOOL as14012xb387bb0 140mm case fan 12V 5.2A 352CFM 6P

SKU CH-409J-JT392 MPN as14012xb387bb0

A high-speed 140 mm case fan delivering up to 352.6 CFM at 5000 RPM with dual-speed 12 V operation and double ball bearings for Whatsminer M20s and M21S cooling

  • Product typeCase Fan
  • High airflow of 352.6 CFM cools demanding mining rigs efficiently
  • Dual-speed 6-wire design provides 5000 RPM high and 3500 RPM low settings
  • Double ball bearing rated for 50000 hours ensures long service life
  • Wide operating range from -25 °C to 75 °C suits harsh environments
  • High static pressure of 21.25 mmAq forces air through dense heatsinks

140mm High-Airflow Replacement Fan

This 140mm case fan delivers up to 352.6 CFM at 5000 RPM with a 12V 5.2A dual-speed motor. It is built as a direct cooling component for Whatsminer M20s and M21S mining hardware. Double ball bearings and a 50000-hour service life support continuous operation in demanding environments.

Dual-Speed 6-Wire Upgrade

The 6-wire interface enables two operating gears: 5000 RPM at 62W for maximum airflow or 3500 RPM at 36W for reduced noise at 60 dBA. The jump is worth it when stock fans cannot maintain safe temperatures under full load or when acoustic levels need to be lowered without sacrificing static pressure of 21.25 mmAq.

Miners and High-Density Cooling Builds

Suits operators replacing failed or loud stock fans in Whatsminer M20s and M21S units, plus custom high-density rigs that can supply 12V at 5.2A per fan. Builders needing PWM motherboard control, standard 4-pin connectors, or lower current draw for typical PC cases should look at alternatives.

How it compares

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

Price $32.99
Pricier than about 80% of the 8,339 comparable items (median $19.99).

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Specifications

Product
Product typeCase Fan

Questions about this item

What are the exact mounting dimensions for the as14012xb387bb0 fan?

The fan measures 140mm by 140mm with a 38mm thickness, matching the standard 14038 form factor.

How do I wire the six-pin connector on this 12V 5.2A fan?

The 6-wire plug provides two speed gears; connect the 12V and ground pins to the PSU or controller, then use the PWM or voltage lines to select 5000 or 3500 RPM.

When should I plan to replace the double ball bearing unit?

The manufacturer rates service life at 50000 hours; schedule a swap before bearing wear reduces airflow or increases noise.

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