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Small black 40mm square frame fan with transparent blades, 10mm thick

CAFELE

CAFELE KDE1204PFV2 12V 1.0W 40mm 5500rpm 27dBA case fan

SKU CH-QMTZ-QF7PW MPN KDE1204PFV2

A 40 mm case fan running at 5500 rpm with 27 dBA noise and 1.0 W power draw

  • TypeCase Fan
  • Compact 40 mm frame fits tight chassis spaces
  • 12 V DC operation with 4 V to 13 V working range
  • Low 1.0 W power draw and 0.08 A current
  • Quiet 27 dBA noise at 5500 rpm maximum speed
  • 4010 form factor with 10 mm thickness for standard mounts

Compact 40 mm case fan

The CAFELE KDE1204PFV2 is a 40 mm square frame fan designed for tight chassis spaces or targeted component cooling. It runs on a 12 V DC supply and draws 1.0 W at 0.08 A, making it suitable for standard motherboard headers or fan controllers. The fan operates within a 4 V to 13 V working range.

Two-wire installation notes

The fan uses a simple two-wire connector, so installation only requires matching polarity to a 12 V header. Speed control is not supported because there is no PWM or tachometer wire; the fan will run at full voltage. The listed 5500 rpm applies to the standard curve, while the speed drops to 4200 rpm when the acceleration and deceleration line is active.

Noise and airflow balance

At 27 dBA the acoustic output is modest for a 5500 rpm spindle, but the small 40 mm frame limits total airflow compared to larger fans. Builders needing high static pressure for dense heatsinks or radiators should verify that this form factor meets their thermal target. It is not for systems requiring PWM speed regulation or high-volume air movement.

Highlights

  • Compact 40 mm frame fits tight chassis spaces
  • 12 V DC operation with 4 V to 13 V working range
  • Low 1.0 W power draw and 0.08 A current
  • Quiet 27 dBA noise at 5500 rpm maximum speed
  • 4010 form factor with 10 mm thickness for standard mounts

Specifications

TypeCase Fan

Questions about this item

How can I confirm the fan is running at its rated speed after installation?

The fan should reach 5500 rpm under normal operation; if the speed-control line is used it will settle around 4200 rpm.

What comes with the KDE1204PFV2 and what must I source separately?

The package includes the 40 mm 12 V fan only; mounting screws, a 3-pin or 4-pin adapter and any fan controller are not included.

Which version of this 40 mm fan should I choose for a 12 V system?

The KDE1204PFV2 is the 12 V 1.0 W model rated at 5500 rpm and 27 dBA, matching a standard 12 V header.

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