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Black 40mm square case fan 40 by 40 by 28mm non LED 4 pin PWM

SXDOOL

SXDOOL DBTB0428B2G 40mm case fan 12V 1A 4-pin PWM dual ball bearing >7000 RPM 15-20 CFM >50 dBA black non-LED

SKU CH-HXYP-2SBZ7 MPN DBTB0428B2G

40 mm dual-ball-bearing PWM fan spins beyond 7000 RPM for 15-20 CFM airflow at over 50 dBA noise

  • Fan size40 mm
  • Bearing designBall
  • Rotational speed>7,000 RPM
  • Airflow rate15-20 CFM
  • Operating noise> 50 dBA
  • Power input connector4 Pin
  • High-speed cooling at >7000 RPM for compact systems
  • PWM intelligent temperature control adjusts fan speed automatically
  • Dual ball bearing design rated for 70000 hours of operation
  • 40×40×28 mm form factor fits tight server and chassis spaces
  • 12 V 1 A power input delivers 19.4 CFM airflow

Compact server cooling

The SXDOOL DBTB0428B2G is a 40mm case fan built for tight server chassis and high-density enclosures. It runs on 12V power through a 4-pin PWM connector, allowing the system to regulate speed based on temperature. The black non-LED housing keeps the appearance neutral for professional racks.

Suited for high-throughput airflow

This fan targets builders who need concentrated airflow in a 40mm footprint, such as 1U servers, network appliances or GPU cooler replacements. The dual ball bearing supports sustained high-speed rotation. Buyers who require quiet operation for desktop or home-theatre use should look elsewhere, as the noise level exceeds 50 dBA at full speed.

Speed and airflow envelope

The unit spins faster than 7000 RPM and delivers 15 to 20 CFM of air volume. That combination decides whether it can meet the thermal demand of a compact, power-dense system.

How it compares

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

Price $6.99
Cheaper than about 94% of the 8,339 comparable items (median $19.99).
Fan size 40 mm
Lower than about 90% of the 1,114 comparable items (median 120 mm).

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Specifications

Product
Product typeCase Fan
Product colorBlack
Performance
Rotational speed>7,000 RPM
Airflow rate15-20 CFM
Power
Power input connector4 Pin
Size & build
Fan size40 mm
Bearing designBall
Environment & compliance
Operating noise> 50 dBA
More details
LED lightingNon-LED

Questions about this item

Will the 40 mm frame and 4-pin PWM connector fit the same mounting holes and header as my existing AVC 4028 fan?

Yes — the fan measures 40×40×28 mm and uses a standard 4-wire PWM connector, so it matches the AVC 4028 footprint and motherboard header.

How can I confirm the fan is running at its rated >7000 RPM after installation?

Connect the 4-pin PWM header, then monitor the RPM reading in BIOS or fan-control software; it should report speeds up to 18000 RPM ±10 %.

Does the package include mounting screws or a 3-pin adapter, or must I buy them separately?

The box contains only the 40 mm dual ball bearing fan with its attached 4-pin cable; screws and any adapter cables are not included.

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