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Black laptop CPU cooling fan with plastic housing and wire connector

DBTLAP

DBTLAP CPU Cooler Fan for HP ProBook 4440s 4540s 4740s

SKU CH-BNJB-5PQ4F

Replacement CPU cooling fan compatible with HP ProBook 4440s, 4540s and 4740s models, supplied as a single tested unit

  • Accessory TypeCooler
  • Compatible with HP ProBook 4440s 4540s 4740s models
  • Replaces original part numbers 683484-001 and 689658-001
  • Each unit tested before shipping for reliable cooling
  • Direct CPU cooler fan replacement restores thermal performance
  • Single fan package includes one cooler unit

Replacement fan for ProBook 4440s 4540s 4740s

This new CPU cooler fan replaces part numbers 683484-001 and 689658-001 in HP ProBook 4440s, 4540s and 4740s laptops. It is intended for owners who need to swap a worn or noisy original cooler. The package contains one fan unit only. Buyers who want a complete cooling assembly with heatsink or thermal pads should look elsewhere.

Thermals noise and power in daily use

Each unit is tested before shipping to confirm it spins and moves air through the laptop chassis. No acoustic or power-draw figures are supplied by the manufacturer. The fan draws power from the standard motherboard header, so no extra wiring or external supply is required.

Build quality and connector implications

Photographs show the exact connector layout and mounting tabs, allowing visual verification against the old part before purchase. The supplier advises checking the images and confirming the part number to guarantee 100 % compatibility. If the connector or screw positions differ, the fan will not fit the target ProBook models.

Highlights

  • Compatible with HP ProBook 4440s 4540s 4740s models
  • Replaces original part numbers 683484-001 and 689658-001
  • Each unit tested before shipping for reliable cooling
  • Direct CPU cooler fan replacement restores thermal performance
  • Single fan package includes one cooler unit

Specifications

Accessory TypeCooler

Questions about this item

How do I install the DBTLAP CPU cooler fan in my HP ProBook 4440s and which step is often missed?

Remove the bottom case, disconnect the old fan cable from the motherboard, swap the fan, then reconnect the cable before reassembling; the step often missed is forgetting to plug the new fan connector back in.

What maintenance will this replacement fan need later?

Clean dust from the heatsink fins and fan blades every six to twelve months using compressed air; the fan bearing is sealed so no lubrication is required.

What limit appears first when this cooler fan runs under sustained load?

The single fan can only move a finite amount of air, so thermal throttling of the CPU occurs once the heatsink saturates during prolonged heavy workloads.

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