DELL Latitude 5400 5401 Palmrest Touchpad Assembly Dual Point A18BN2 accessory

Genuine Dell OEM palmrest assembly

This is a Genuine Dell OEM palmrest touchpad assembly built for Latitude 5400 and 5401 laptops configured with Dual Pointing layouts. The part number A18BN2 matches the factory specification and includes the touchpad module, mouse buttons, smart card reader, junction board, USH junction cable and NFC reader. It is a direct replacement for the original equipment. || Buyers whose Latitude uses a single pointing layout or a different chassis generation cannot use this assembly.

Thermals noise and power draw

The assembly contains no active cooling components and draws no measurable power of its own; it operates passively within the laptop’s existing thermal envelope. Installation adds no fan noise and does not change system power consumption. The smart card and NFC modules are low-power peripherals managed by the host platform. || Systems that rely on external docking for secure authentication will see no thermal impact from this part.

Build quality and daily connectivity

The palmrest is moulded to Dell’s original tolerances and integrates the Dual Point stick with two full button rows for precise navigation. The included smart card reader and NFC module sit flush with the surface, allowing contact and contactless credential use without protrusions. All ribbon cables and the USH junction cable are pre-routed on the supplied junction board for straightforward reconnection. || Technicians without the matching service manual or the correct screwdriver bits may find the multi-cable routing challenging.