Laptop Internal Keyboard for HP ProBook 4436s, 4330s, 4331s, 4435s – 638178 / 646365-001

Product Description

The Laptop Internal Keyboard for HP ProBook 4436s, 4330s, 4331s, 4435s and 4436s is a replacement keypad designed for compatible HP ProBook laptops. It allows users to replace a damaged, worn-out, or non-working keyboard and restore normal typing functionality.

Suitable for replacing keyboards with missing keys, unresponsive buttons, damaged keycaps, or typing issues.

Compatible Models

• HP ProBook 4330s

• HP ProBook 4331s

• HP ProBook 4435s

• HP ProBook 4436s

Compatible Part Numbers

• 638178

• 646365-001

Please match the complete part number and keyboard layout with your original keyboard before ordering.

Product Details

• Product Type: Laptop Internal Keyboard

• Brand Compatibility: HP

• Compatible Series: ProBook

• Compatible Models: 4330s, 4331s, 4435s, 4436s

• Part Numbers: 638178 / 646365-001

• Installation Type: Internal Laptop Keyboard

• Keyboard Layout: Please confirm before publishing (US / UK / other).

• Backlight: Please confirm before publishing.

• Product Condition: Please confirm before publishing — Brand New / Original Used / Refurbished.

• Package Includes: 1 × Laptop Internal Keyboard

Product Condition

Please confirm before publishing — Brand New / Original Used / Refurbished.

Warranty Details

1 Month Replacement Warranty

Important Note

• Compare the product image with your original keyboard before ordering.

• Verify your exact HP ProBook model and original keyboard part number.

• Check keyboard layout, language, connector type, ribbon cable position, and mounting arrangement.

• Confirm whether your original keyboard has a backlight before purchasing.

• Similar HP ProBook models may use different keyboard versions.

• This listing includes the internal keyboard only. Palmrest, touchpad, and other laptop components are not included unless specifically mentioned.

• Professional installation is recommended.

• Replacement is subject to verification of the reported functionality issue.

• Physical damage, liquid damage, cuts, burns, incorrect installation, or misuse are not covered.

• Please provide a complete delivery address with PIN code and contact number.

Frequently Asked Questions

1. Is this keyboard compatible with HP ProBook 4330s?
It is listed for the HP ProBook 4330s. Match the original keyboard part number and connector before ordering.

2. Is it compatible with HP ProBook 4435s and 4436s?
Yes, these models are included in the listed compatibility information. Verify the keyboard layout and connector.

3. Which part numbers are listed for this keyboard?
The supplied part numbers are 638178 and 646365-001.

4. Does this keyboard include a touchpad?
No, this listing includes only the internal laptop keyboard.

5. How can I confirm the correct keyboard?
Check the original keyboard part number, key layout, connector position, ribbon cable, and mounting design.