HP Spectre x360 2-in-1 14-EF CPU Cooling Fan – ND55C99-21A08

Product Description

Buy a compatible CPU cooling fan for HP Spectre x360 2-in-1 14-EF laptops from LaptopHub. This replacement processor cooling fan is designed for compatible HP Spectre x360 convertible laptops experiencing overheating, excessive fan noise, poor airflow, or CPU cooling problems.

The CPU cooling fan is an essential component of the laptop’s thermal management system. It circulates air through the cooling assembly and helps dissipate heat generated by the processor during everyday computing, multitasking, and demanding applications.

A faulty or damaged CPU fan can cause excessive temperatures, loud grinding noises, reduced system performance, thermal throttling, and unexpected laptop shutdowns. Replacing the defective fan may help restore proper airflow and cooling performance.

This product is identified by fan part number ND55C99-21A08, associated with HP spare part number N12234-001.

Important: This listing is for one CPU-side cooling fan only. It does not include the companion fan, heatsink, heat pipes, or complete cooling assembly.

Compatible Models

Selected HP Spectre x360 14-EF and 14T-EF configurations:

• HP Spectre x360 14-EF0000 Series
• HP Spectre x360 14-EF1000 Series
• HP Spectre x360 14-EF2000 Series
• HP Spectre x360 14T-EF Series

Compatibility is subject to the original fan marking and electrical specifications.

Regulatory Chassis: TPN-C155

Compatible Part Numbers

• ND55C99-21A08 – CPU-side cooling fan
• N12234-001 – Associated complete fan and heatsink assembly

Product Details

• Product Category: Laptop Spare Parts
• Product Name: CPU Cooling Fan
• Compatible Brand: HP
• Compatible Series: HP Spectre x360 14-EF / 14T-EF
• Component Type: Internal CPU blower fan
• Fan Position: CPU side
• Fan Part Number: ND55C99-21A08
• Associated HP Spare Part Number: N12234-001
• Platform: Dashiell
• Regulatory Chassis: TPN-C155
• Fan Voltage: DC 5V
• Rated Current: 0.50A
• Connector: 4-wire, 4-pin
• Fan Design: Centrifugal blower
• Installation Location: Inside laptop cooling assembly
• Product Condition: New compatible replacement
• Package Contents: 1 CPU cooling fan only
• Heatsink: Not included
• Companion Fan: Not included
• Installation: Professional installation recommended

Product Features and Benefits

• Replacement CPU-side cooling fan for compatible HP Spectre x360 laptops.
• Designed for the HP Spectre x360 14-EF cooling platform.
• Helps maintain proper processor operating temperature.
• Supports airflow through the laptop’s cooling system.
• Suitable for replacing noisy, damaged, seized, or non-functional fans.
• Compact blower design for internal laptop cooling.
• 4-pin connection for compatible motherboard fan control.
• Helps reduce overheating caused by a defective CPU fan.

Common Signs of a Faulty CPU Cooling Fan

Replace the CPU fan if inspection confirms problems such as:

• CPU fan not spinning.
• Loud buzzing, rattling, or grinding noises.
• Excessive processor temperature.
• Poor airflow from the cooling vents.
• Laptop performance slowing because of thermal throttling.
• Unexpected shutdowns due to overheating.
• Fan starting and stopping abnormally.
• Fan error or cooling system warning.

These symptoms may also result from dust accumulation, blocked ventilation, dried thermal paste, or motherboard fan-control issues.

Installation Guidance

1. Shut down the laptop completely and disconnect the charger.
2. Open the laptop using the correct model-specific service procedure.
3. Disconnect the internal battery before handling internal components.
4. Locate the CPU-side fan and disconnect its 4-pin connector.
5. Remove the screws securing the original fan.
6. Compare the replacement fan’s housing, connector, cable length, and mounting points.
7. Install the replacement without forcing the connector or trapping the cable.
8. Reassemble the laptop and test fan operation.

If the heatsink is removed during installation, clean the old thermal compound and apply suitable fresh thermal material before reassembly.

Professional installation is recommended.

Warranty Details

1 Month Replacement Warranty against verified eligible manufacturing or functional defects, subject to LaptopHub’s applicable replacement terms.

Physical damage, accidental damage, burns, cuts, misuse, installation damage, and missing or damaged warranty stickers or labels are excluded.

Important Note

• Verify your complete HP Spectre x360 14-EF model before ordering.
• Check that your original CPU fan marking is ND55C99-21A08.
• Confirm the original fan voltage is DC 5V and rated current is 0.50A.
• This listing includes only one CPU-side fan.
• The companion fan ND55C0A-21A09 is not included.
• Heatsink, heat pipes, thermal compound, screws, and retaining tape are not included.
• The CPU-side and companion fans have different housings and are not interchangeable.
• Some HP Spectre 14-EF configurations may use different fan revisions, including 12V versions. Verify the original electrical rating before ordering.
• Compare connector keying, wire arrangement, cable length, mounting tabs, and blower outlet shape.
• Using an incompatible fan may damage the motherboard or cooling system.
• Professional installation is recommended.
• If the product is out of stock, your payment will be refunded according to the applicable order process.
• Replacement for verified functional issues is subject to the applicable warranty terms.
• Warranty does not cover external causes, accidents, physical damage, cuts, burns, misuse, or missing or damaged warranty stickers and labels.
• Ensure your delivery address includes the correct PIN code and contact number.
• Product images are for reference; the supplied product may differ slightly in appearance.

Frequently Asked Questions

1. Is this CPU fan compatible with HP Spectre x360 14-EF?

It is designed for selected HP Spectre x360 14-EF and 14T-EF configurations using the ND55C99-21A08 CPU-side fan. Verify the original fan marking and voltage before ordering.

2. What is the part number of this HP Spectre CPU fan?

The CPU-side fan part number is ND55C99-21A08. Its associated complete fan and heatsink assembly is identified as N12234-001.

3. Does this product include both CPU and GPU fans?

No. This listing includes one CPU-side cooling fan only. The companion fan ND55C0A-21A09 must be purchased separately.

4. What is the voltage and connector type of this CPU fan?

The referenced ND55C99-21A08 fan is rated DC 5V, 0.50A and uses a 4-wire, 4-pin connector. Always compare the original fan label before installation.

5. Can a faulty CPU fan cause laptop overheating?

Yes. A damaged or non-functioning CPU fan can reduce airflow, causing overheating, thermal throttling, and unexpected shutdowns. Check the complete cooling system if overheating continues.