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Small rectangular blower fan, two-tone finish, three-pin connector

OEM Industries

OEM Industries AB0505HX-QC3 CW840 5V .3A 3 Pin Blower CPU cooler

SKU CH-1XWP-2KB5K

A 5 V blower fan with Hypro bearing and three-pin connector for notebook CPU cooling

  • Color2-Tone
  • TypeFan only
  • Bearing TypeHypro
  • Power Connector3 Pin
  • LEDNo
  • 5 V 0.3 A draw keeps notebook power budget low
  • Hypro bearing reduces friction for quieter operation
  • Blower design directs airflow straight onto CPU heatsink
  • Three-pin connector enables motherboard speed control
  • Compact fan-only module fits tight laptop chassis

Notebook Blower Fan

The ADDA AB0505HX-QC3 CW840 is a 5V 0.3A blower designed for notebook CPU cooling. It suits technicians replacing a worn or noisy original fan in a compatible laptop chassis. The three-pin connector provides power and speed reporting to the system board. This unit is sold as the fan assembly only without a heatsink.

Check Connector and Voltage

Verify that the existing cooler uses a three-pin 5V 0.3A blower with the same pinout before ordering. Confirm the physical dimensions and mounting screw pattern match the laptop service manual. The Hypro bearing type may affect long-term acoustic profile compared to the original bearing. Ensure the replacement airflow direction matches the system thermal design.

Sustained Airflow Behaviour

Under continuous load the blower maintains a steady 5V 0.3A draw while exhausting air through a focused outlet. The Hypro bearing is engineered for consistent rotation speed during extended operation. Thermal throttling in the notebook depends on the surrounding heatsink capacity which is not included with this fan. Acoustic output remains stable without the rattle sometimes heard in sleeve-bearing blowers after prolonged use.

Highlights

  • 5 V 0.3 A draw keeps notebook power budget low
  • Hypro bearing reduces friction for quieter operation
  • Blower design directs airflow straight onto CPU heatsink
  • Three-pin connector enables motherboard speed control
  • Compact fan-only module fits tight laptop chassis

Specifications

ModelAB0505HX-QC3
Color2-Tone
TypeFan only
Bearing TypeHypro
Power Connector3 Pin
LEDNo

Questions about this item

Does the AB0505HX-QC3 blower ship with mounting screws or thermal paste, or must they be purchased separately?

The listing describes the unit as a fan only, so mounting hardware and thermal compound are not included and must be sourced separately.

The model code includes 505 and 840 — what do those numbers identify for this cooler?

505 is part of the ADDA model designation AB0505HX-QC3, while 840 appears in the supplier code CW840; neither denotes a capacity or version choice for this single SKU.

With a 5 V 0.3 A rating, how much cooling performance can I expect once the blower is installed in a laptop?

The blower draws 0.3 A at 5 V, providing airflow for notebook CPU cooling; actual thermal results depend on the laptop's heatsink design and workload.

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