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Small black laptop CPU cooling fan with four-pin connector

Fans

Fans Sunon EG50050S1-C140-S9A DC5V .40A 4-pin laptop CPU fan

SKU CH-KZSB-9NPYT

Replacement laptop CPU fan operating at 5 V and 0.40 A with a 4-pin connector

  • DC 5 V 0.40 A power draw for efficient laptop cooling
  • 4-pin PWM connector enables precise speed control
  • Sunon EG50050S1-C140-S9A matches Dell part number
  • Replacement laptop CPU fan restores original thermal performance
  • Single fan unit packaged ready for direct installation

Dell Laptop CPU Fan Replacement

This Sunon EG50050S1-C140-S9A is a 4-pin laptop CPU cooling fan designed as a direct replacement for compatible Dell models. It operates at 5V with a 0.40A current draw to maintain processor temperatures under load. The unit ships new and includes only the fan assembly itself.

Upgrade From Worn or Failed Coolers

Replace this part when the original fan develops bearing noise, reduced airflow or complete failure that causes thermal throttling. The jump is worth it if your current cooler matches the exact appearance, screw alignment and 4-pin connector shown in the listing images. Visual confirmation is essential because many fans share similar part numbers but differ physically.

Limits of 4-Pin Laptop Fan Interface

The 4-pin connector provides PWM speed control and tachometer feedback but only fits motherboards wired for that specific pinout and voltage. Proprietary Dell mounting tabs and cable routing restrict installation to models engineered for this exact assembly. Buyers needing a universal fit or a different connector layout cannot use this component.

How it compares

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

Price $14.99
Cheaper than about 67% of the 8,339 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What screw-hole spacing matches the 140 mm mounting pattern on this fan?

The fan uses a 140 mm screw alignment; remove the old cooler and verify the hole positions against the product photo before ordering.

How do I connect the 4-pin PWM header without bending the delicate pins?

Align the keyed 4-pin connector vertically, press straight down until the latch clicks, and route the cable clear of the heatsink fins.

When should I plan to replace the .40 A bearing assembly?

Expect a bearing refresh after roughly 40 000 operating hours; rising noise or RPM drop signals it is time.

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