We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black square 40 mm case fan with 38 mm depth and three-pin connector

SunnyStar Co., Ltd

SunnyStar Co., Ltd 405038-12HB HAB 40*38mm 12V .75A 3 Pin case fan

SKU CH-N7T4-H02X1

40 mm ball-bearing case fan with 3-pin connector runs at 12 V and 0.75 A for compact server cooling

  • Bearing designBall
  • Power input connector3 Pin
  • LED lightingNon-LED
  • Product typeCase Fan
  • Compatible withCase
  • Product colorBlack
  • 12 V, 0.75 A power draw for efficient server cooling
  • Ball bearing ensures reliable long-term operation
  • 40 × 40 × 38 mm frame fits compact 4 cm bays
  • Three-pin connector with five wires for speed monitoring
  • Non-LED black design keeps builds clean and professional

40 mm ball-bearing case fan

The SunnyStar 405038-12HB is a 40 mm by 38 mm case fan that runs on 12 V and draws 0.75 A through a three-pin power connector. Ball bearings and a black non-LED frame are built for continuous airflow in tight chassis.

Server and compact-system builders

This fan suits servers or small-form-factor cases that accept a 40 mm mounting pattern and a three-pin header. Builders who need PWM speed control, larger diameters or RGB lighting should look at other models.

Three-pin 12 V power connector

The 3-pin header delivers fixed 12 V power without PWM signalling, so the fan runs at a constant speed unless the motherboard or controller supports voltage-based regulation.

How it compares

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

Price $21.99
Pricier than about 55% of the 8,339 comparable items (median $19.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Product line405038-12HB HAB
Model name405038-12HB
Product typeCase Fan
Product colorBlack
Power
Power input connector3 Pin
Size & build
Bearing designBall
Product dimensions40 × 40 × 38 mm
Compatibility
Compatible withCase
More details
LED lightingNon-LED

Questions about this item

How do I install the 405038-12HB HAB fan in a 40 mm mounting hole, and which step is often missed?

Align the 40 mm square frame with the case holes, insert the four mounting screws through the fan corners, then connect the 3 pin power connector to the motherboard header — the step often missed is seating the connector fully so all three pins make contact.

What maintenance will the ball bearing in this 12 V .75 A fan need over time?

The ball bearing is sealed and does not require lubrication; if noise or vibration appears after extended use, replace the entire 405038-12HB HAB unit rather than attempting bearing service.

What is the first limit reached when this 40*38 mm fan runs continuously at 12 V?

Continuous operation at the rated 12 V and .75 A will eventually hit the ball bearing’s wear life, which typically becomes audible as increased noise before airflow drops below usable levels.

More in PC Cooling Fans

Similar items