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Small black laptop CPU cooling fan with plastic housing and wire connector

Fans

Fans laptop cooling pad UX21 UX21A KDB05105HB-BM55

SKU CH-7WE4-SQ06T

Replacement CPU cooling fan for ASUS Zenbook Prime UX21 and UX21A notebooks

  • Direct replacement for ASUS Zenbook Prime UX21 UX21A models
  • New condition ensures reliable cooling performance from installation
  • KDB05105HB-BM55 part number matches original manufacturer specifications
  • CPU cooling fan restores proper thermal management for notebook computers

Replacement CPU fan for ASUS Zenbook Prime UX21

This replacement CPU cooling fan is built for the ASUS Zenbook Prime UX21 and UX21A ultrabooks. It restores factory cooling performance when the original fan fails or becomes noisy. The part matches the KDB05105HB-BM55 specification for direct fitment. Installers can swap the unit without modifying the laptop chassis.

Thermals noise and power draw in normal use

The fan draws minimal power from the system board while moving enough air to keep the processor within its thermal envelope. Acoustic output stays low during typical office workloads and web browsing. Heat is exhausted through the existing vent layout without adding extra back-pressure. The assembly runs at the stock speed curve defined by the laptop firmware.

How it compares

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

Price $9.99
Cheaper than about 90% of the 6,190 comparable items (median $20.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the KDB05105HB-BM55 fan in my ASUS Zenbook Prime UX21A, and which step is most often missed?

Remove the bottom case, disconnect the old fan cable from the motherboard header, swap the unit, then reconnect the cable firmly; the step most often missed is re-seating the connector until it clicks.

What maintenance will the KDB05105HB-BM55 cooling fan need over time?

Blow dust from the heatsink fins and fan blades every few months with compressed air; replace the fan only if bearing noise appears or airflow drops noticeably.

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