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Dell Vostro 3550 palmrest assembly with fingerprint reader and touchpad

DELL

DELL Vostro 3550 Palmrest Assembly 77T86

SKU CH-3SQ5-CFJ1F

Replacement palmrest assembly with touchpad, fingerprint reader and power button for Vostro 3550 laptops

  • Genuine Dell OEM part numbered 77T86
  • Direct fit for Vostro 3550 models
  • Integrated fingerprint reader for secure login
  • Includes quick-launch buttons and power button board
  • Complete assembly with touchpad and mouse buttons

Replacement Palmrest for Vostro 3550

This genuine Dell assembly fits the Vostro 3550 notebook. It restores the complete top case section including the touchpad, mouse buttons, power button and quick-launch controls. The unit arrives new and ready for installation by a qualified technician.

Integrated fingerprint reader and button circuitry

The module includes a biometric fingerprint reader built into the palmrest. All button circuits, touchpad electronics and the power button board are pre-assembled. Compatibility is limited to the exact Vostro 3550 model; other Dell chassis will not align with the mounting points or ribbon connectors.

Direct substitute for damaged or worn original

This part replaces a cracked palmrest, failing touchpad or non-functional fingerprint sensor on the same laptop. The upgrade is worthwhile when the existing top case shows physical damage or the biometric login has stopped working. It is not suitable for other laptop families or newer Vostro designs.

Highlights

  • Genuine Dell OEM part numbered 77T86
  • Direct fit for Vostro 3550 models
  • Integrated fingerprint reader for secure login
  • Includes quick-launch buttons and power button board
  • Complete assembly with touchpad and mouse buttons

Specifications

BrandDell

Questions about this item

Does the 77T86 palmrest fit my Vostro 3550?

The 77T86 is the Dell part number for the Vostro 3550 palmrest assembly, so it matches that model exactly.

Will the fingerprint reader on this 77T86 assembly work after I install it?

The fingerprint reader is built into the palmrest circuitry and connects to the laptop's motherboard header; it functions once the board recognises the device.

Which connectors does the 77T86 palmrest use to link the touchpad, power button and fingerprint reader?

The assembly includes the touchpad, mouse buttons, power button board and fingerprint reader on their respective ribbon cables that plug into the Vostro 3550 motherboard.

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