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Flat beige ribbon cable with connectors on each end

DELL

DELL Precision 7550 Palmrest Junction Board Ribbon Cable A19AF2 accessory

SKU CH-KACP-70PE4

Genuine Dell OEM ribbon cable connecting the palmrest junction board to the motherboard on Precision 7550 laptops

  • Genuine Dell OEM part ensures exact fit for Precision 7550
  • Connects palmrest junction board to motherboard restoring full functionality
  • Part number A19AF2 matches service manual specifications precisely
  • Alternate part numbers FDX50 and NBX0002N800 confirm cross-reference accuracy
  • New condition guarantees reliable performance without prior wear

Genuine Dell Precision 7550 Palmrest Junction

This is a genuine Dell OEM replacement part designed specifically for the Precision 7550 laptop. It connects the palmrest junction board to the motherboard to restore full functionality. The part number is A19AF2 with alternate references FDX50 and NBX0002N800. Buyers needing a different laptop model or a complete palmrest assembly will not find a match here.

Passive ribbon cable with no active thermals noise

The cable operates passively inside the chassis and generates no heat, noise, or electrical load of its own. It simply carries signals between the palmrest junction board and the mainboard. Installation requires disassembly of the laptop but adds no thermal or acoustic impact to the system.

Direct OEM fit restores palmrest functions without

The ribbon cable is a direct physical replacement that re-enables components connected through the palmrest junction board such as the touchpad, fingerprint reader, or power button. No drivers, firmware updates, or configuration utilities are required or included. The part is purely mechanical and electrical.

Highlights

  • Genuine Dell OEM part ensures exact fit for Precision 7550
  • Connects palmrest junction board to motherboard restoring full functionality
  • Part number A19AF2 matches service manual specifications precisely
  • Alternate part numbers FDX50 and NBX0002N800 confirm cross-reference accuracy
  • New condition guarantees reliable performance without prior wear

Specifications

BrandDell

Questions about this item

How is the A19AF2 ribbon cable installed between the palmrest junction board and motherboard, and which step is often missed?

Route the cable through the chassis clips, seat the ZIF connectors fully on both ends, and verify the latch tabs click — skipping the latch check causes intermittent trackpad or fingerprint reader faults.

What maintenance or replacement will the A19AF2 ribbon cable need during the Precision 7550's service life?

No scheduled maintenance is required; replace only if the cable is kinked, the conductors fracture, or the ZIF contacts oxidise after repeated palmrest removals.

What limit appears first on the A19AF2 ribbon cable under sustained daily flexing from lid open and close cycles?

The fine-pitch conductors fatigue at the bend radius near the palmrest hinge, leading to open-circuit failures on the trackpad or power-button lines before the ZIF connectors wear out.

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