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Small black rectangular laptop CPU cooling fan with wire connector

DBTLAP

DBTLAP CPU Cooling Fan DIS for Dell Latitude 3440 E3440

SKU CH-DTN9-2E0AC

Replacement CPU cooling fan for Dell Latitude 3440 and E3440 laptops, tested before shipping

  • Accessory TypeCooler
  • Replacement fan restores cooling for Dell Latitude 3440
  • Matches part numbers 228K4 0228K4 DFS5K22B15673H FQ73
  • Operates at 5V 0.5A for correct power draw
  • Each unit tested before shipping for reliability
  • Verify photos and model number to ensure fit

Replacement fan for Dell Latitude 3440

This DBTLAP cooling fan is a direct replacement for the Dell Latitude 3440 and E3440 series. It matches part numbers 228K4, 0228K4 and DFS5K22B15673H for exact fit. The unit is designed for owners who need to restore original cooling performance after a failure.

5V 0.5A power draw and discrete graphics support

The fan operates at 5 volts with a 0.5 amp current rating for low power consumption. It is the DIS variant built for models equipped with discrete graphics. Each unit is tested before shipping to verify correct airflow and quiet operation.

Sustained cooling for discrete GPU workloads

Under continuous load the fan maintains steady RPM to dissipate heat from both CPU and discrete GPU. The design targets consistent thermal control during extended sessions rather than short bursts. Buyers needing a dual-fan assembly or a version for integrated graphics models should verify their part number carefully.

Highlights

  • Replacement fan restores cooling for Dell Latitude 3440
  • Matches part numbers 228K4 0228K4 DFS5K22B15673H FQ73
  • Operates at 5V 0.5A for correct power draw
  • Each unit tested before shipping for reliability
  • Verify photos and model number to ensure fit

Specifications

Accessory TypeCooler

Questions about this item

How do I install the DBTLAP CPU cooling fan in my Dell Latitude 3440, and what step is often missed?

Remove the bottom cover, disconnect the old fan cable, and replace it with the new 5V 0.5A unit. The step often missed is verifying the part number 228K4 or 0228K4 matches your original exactly before fitting.

What maintenance will this replacement fan need over time?

The fan is a sealed 5V 0.5A assembly with no user-serviceable bearings. Maintenance is limited to keeping the laptop vents clear of dust; if airflow drops or noise rises, the whole fan unit (part DFS5K22B15673H) must be replaced.

What is the first limit reached under sustained heavy load?

The 5V 0.5A power rating caps the maximum spin speed, so under continuous heavy load the airflow limit of this specific FQ73 model is reached before any thermal throttle engages.

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