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Small black 40mm square server fan with four wires

Fans

Fans AD0412HB-B5BDS 12V 40x40x28mm 4-wire case fan

SKU CH-S62G-16K84

A compact 40 mm square, 28 mm thick case fan with a 4-wire PWM connection running on 12 V at 0.60 A

  • 4-wire PWM control enables precise speed regulation
  • 40 × 40 × 28 mm footprint fits tight server chassis
  • 12 V / 0.60 A draw keeps power budget low
  • 412 model code identifies the exact replacement part

Compact 40 mm server fan

The AD0412HB-B5BDS is a 40 mm square frame fan built for 12 V server and workstation chassis. Its 4-wire PWM connection allows precise speed control from the motherboard or fan controller. The slim 28 mm depth fits tight rack-mount enclosures and small-form-factor cases where larger fans cannot be installed. It targets system integrators and IT staff who need reliable spot cooling in dense equipment.

Four-wire control and thin profile

The 4-wire header supports automatic temperature-based regulation without extra wiring harnesses. A 0.60 A draw at 12 V keeps power demand modest for redundant power supplies. The 28 mm thickness leaves clearance for low-profile heatsinks or daughter boards mounted directly behind the fan wall. Builders needing higher static pressure at larger diameters or alternative voltage rails will need a different model.

Highlights

  • 4-wire PWM control enables precise speed regulation
  • 40 × 40 × 28 mm footprint fits tight server chassis
  • 12 V / 0.60 A draw keeps power budget low
  • 412 model code identifies the exact replacement part

Specifications

No published specifications for this item yet.

Questions about this item

What does the 4-wire PWM interface control on this 12V fan?

The fourth wire carries a PWM signal that lets the motherboard vary the fan speed precisely while the 12V line supplies constant power.

Will the 40x40x28mm frame fit a standard 40mm mounting pattern?

Yes, the 40mm square footprint matches the common 40mm hole spacing, and the 28mm thickness is the usual depth for server-style fans.

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