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Small black plastic CPU cooling fan with wire grille and cable

Fans

Fans CPU Cooler KSB05105HCA02 for Lenovo B40 E40 B50

SKU CH-K1ZZ-1BTHT

New original CPU cooling fan compatible with Lenovo B40, E40, B50 and related models

  • New genuine replacement cooler fits Lenovo B40 series
  • Direct-fit design matches E40 and B50 models
  • Original KSB05105HCA02 part ensures correct mounting
  • Brand-new condition guarantees reliable CPU cooling performance

Replacement CPU fan for Lenovo B and E series

This new original CPU cooler fits Lenovo B40 E40 B40-30 B40-45 B40-70 B50-30 B50 laptops. It matches part number KSB05105HCA02 for direct installation. The cooler is intended for owners repairing a worn or noisy factory fan in these specific models. Builders working on other chassis or custom desktops cannot use this proprietary unit.

Thermals noise and power draw in normal use

The fan draws power from the laptop motherboard header during standard operation. It spins to move air across the heatsink and lower CPU temperature under typical workloads. Acoustic output rises with fan speed as the system regulates thermal load. No separate power adapter or external control is required.

Highlights

  • New genuine replacement cooler fits Lenovo B40 series
  • Direct-fit design matches E40 and B50 models
  • Original KSB05105HCA02 part ensures correct mounting
  • Brand-new condition guarantees reliable CPU cooling performance

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the KSB05105HCA02 cooler on my Lenovo B40 or E40, and what step is often missed?

Remove the old cooler, align the new unit with the motherboard mounting holes, secure the screws, and connect the fan header; the step often missed is plugging the fan cable back in.

What maintenance will the KSB05105HCA02 need later, and when should I replace it?

Clean dust from the heatsink fins and fan blades periodically; replace the unit if the fan becomes noisy, spins irregularly, or stops cooling effectively.

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