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Small black 40mm square case fan with 3-pin connector

SXDOOL

SXDOOL KDE1204PFV1 40mm 12V 1.7W 3-pin case fan

SKU CH-J26M-9Y78Z MPN KDE1204PFV1

A 40 mm 12 V case fan with a 3-pin connector draws 1.7 W to cool compact builds

  • Fan size40 mm
  • Power input connector3 Pin
  • Product typeCase Fan
  • Compact 40 mm frame fits tight chassis spaces
  • 12 V DC input matches standard motherboard headers
  • Low 1.7 W draw keeps power budget minimal
  • Three-pin connector enables speed monitoring
  • Direct Sunon KDE1204PFV1 replacement restores cooling fast

Compact 40 mm replacement fan

The SXDOOL KDE1204PFV1 is a 40 mm case fan built as a direct repair part for Sunon 3-wire coolers. It runs on 12 V and draws 1.7 W, making it suitable for tight spaces where a small footprint is required.

Simple three-pin swap

Installation consists of unplugging the old fan and connecting the 3-pin header to the same motherboard or controller socket. The 40×40×20 mm frame matches the original mounting holes, so no new screws or adapters are needed. The only common issue is reversing the connector orientation, which leaves the fan dead or reporting zero speed.

Verify voltage and connector first

Confirm the existing cooler uses a 12 V supply and a standard 3-pin layout before ordering. Check that the 40 mm square footprint and 20 mm thickness fit the heatsink shroud or chassis cutout. Builders who need PWM speed control or a larger airflow volume should look elsewhere.

How it compares

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

Price $13.99
Cheaper than about 70% 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
Power
Power input connector3 Pin
Size & build
Fan size40 mm

Questions about this item

How do I confirm the 40mm KDE1204PFV1 is spinning correctly after connecting the 3-pin header?

Power the system and watch the blades rotate; the fan should start immediately at 12V and move air steadily through the 20mm thick frame.

What comes in the package and is anything else required for installation?

The box contains one KDE1204PFV1 cooling fan only; you will need a spare 3-pin motherboard or controller header and four 40mm mounting screws.

Which model should I choose if I need a direct Sunon 3-wire replacement?

Select the KDE1204PFV1 4010 — it matches the 12V 1.7W spec and 3-pin connector of the original Sunon cooler.

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