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Small black laptop CPU cooling fan with wire connector

DBTLAP

DBTLAP Laptop CPU Fan for HP ProBook 640 645 650 655 G1 KSB0505HB-DA1B 6033B0034401

SKU CH-1ECB-ABJ5W

Replacement CPU cooling fan for HP ProBook 640, 645, 650 and 655 G1 laptops, tested before shipping

  • Accessory TypeCooler
  • Direct replacement for HP ProBook 640 G1 645 G1 650 G1 655 G1
  • Tested individually before shipping to ensure 100% operation
  • Matches original part numbers KSB0505HB-DA1B and 6033B0034401
  • Produced by Forcecon ADDA Sunon or Kipo depending on stock
  • Includes one fan ready for installation

Replacement CPU Fan for HP ProBook 640 G1 645 G1

This replacement CPU cooler is built for HP ProBook 640 G1, 645 G1, 650 G1 and 655 G1 laptops. It matches the KSB0505HB-DA1B and 6033B0034401 part numbers. Each unit is tested before dispatch to confirm 100 percent operation. The package contains one fan ready for installation.

Fits ProBook G1 chassis without modification

The fan slots into the existing cooling assembly on the listed ProBook G1 models. No extra brackets, adapters or thermal pads are required beyond what the original design provides. Swapping the worn unit restores the factory airflow path and frees the heatsink from dust-clogged blades. Buyers who need a different connector or mounting layout should verify compatibility before ordering.

Tested for continuous operation under load

Every fan is verified to spin up and maintain speed during sustained thermal demand. The 9-month warranty reflects confidence in long-term reliability rather than short bursts. Units ship from manufacturers such as Forcecon, ADDA, Sunon or Kipo depending on stock, all meeting the same functional standard. Buyers seeking higher airflow or quieter acoustics than the original specification will not find those gains here.

Highlights

  • Direct replacement for HP ProBook 640 G1 645 G1 650 G1 655 G1
  • Tested individually before shipping to ensure 100% operation
  • Matches original part numbers KSB0505HB-DA1B and 6033B0034401
  • Produced by Forcecon ADDA Sunon or Kipo depending on stock
  • Includes one fan ready for installation

Specifications

Accessory TypeCooler

Questions about this item

What is the first limit that appears under sustained use of the KSB0505HB-DA1B fan?

The fan is tested one by one before shipping to ensure 100% operation, and a 9-month warranty is provided by the supplier.

What noise, heat or power behaviour should I expect when the fan runs all day?

The supplier notes that fans are produced by Forcecon, ADDA, Sunon, Kipo or other manufacturers, so acoustic and thermal characteristics may vary between units.

What must I already own for this fan to work in my laptop?

You need an HP ProBook 640 G1, 645 G1, 650 G1 or 655 G1, and you should verify the original fan matches the KSB0505HB-DA1B or 6033B0034401 part number before purchasing.

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