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Small black laptop CPU fan with heatsink and wire connector

DBTLAP

DBTLAP laptop CPU fan for Toshiba NB300 NB305 AB4105HX-KB3 heatsink Q

SKU CH-EHNE-B9KZ1

Replacement CPU cooling fan with heatsink for Toshiba NB300 and NB305 laptops

  • Accessory categoryCooler
  • Compatible with Toshiba NB300 and NB305 models
  • Replacement CPU fan with AB4105HX-KB3 heatsink
  • Each unit tested individually before shipment
  • 9-month warranty included for peace of mind
  • Verify fit using photos before purchase

Replacement fan for Toshiba NB300 and NB305

This replacement CPU cooler fits Toshiba NB300 and NB305 notebooks. It matches the AB4105HX-KB3 heatsink specification. The part is supplied new and tested individually before dispatch. It is intended for owners repairing a worn or noisy original fan.

Thermals and acoustics

The fan restores airflow to the heatsink so the processor stays within its thermal envelope. Normal operation returns the laptop to its original acoustic profile. Power draw remains consistent with the factory specification. No additional control software is required.

Included hardware

The package contains one cooling fan unit. Each unit is verified to spin correctly before it leaves the supplier. Buyers should compare the product images with the original component to confirm the connector and mounting layout match. Builders needing a different model or a complete heatsink assembly will need another part.

How it compares

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

Price $11.99
Cheaper than about 80% of the 6,190 comparable items (median $20.99).

Specifications

Product
Accessory categoryCooler

Questions about this item

How do I install the AB4105HX-KB3 heatsink fan in my NB300 or NB305, and which step often trips people up?

Remove the old fan and heatsink assembly, clean the CPU surface, apply fresh thermal paste, then fit the new unit and reconnect its cable; the step most often missed is reapplying thermal compound before locking the screws down.

What maintenance or replacement will this Forcecon, ADDA, Sunon or Kipo fan need over time?

Plan to blow dust from the heatsink fins and blades periodically; if the bearing becomes noisy or airflow drops, swap the entire fan unit because the bearing is not serviceable.

What limit appears first when this cooler runs under sustained load in an NB300 or NB305?

The thermal capacity of the heatsink and the single fan's airflow set the ceiling; once the CPU hits its throttle point the fan cannot move more heat, so temperatures stabilise at the throttling threshold.

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