SPS-TOUCH PAD W/NFC

HP 821172-001 TouchPad with NFC antenna is a replacement touchpad assembly for the HP EliteBook 840 G4 and EliteBook 848 G4 notebooks covered by HP’s service guide. The integrated touchpad provides the laptop’s finger-operated pointer control, while its antenna supports NFC functionality when paired with the required system components.

This exact part is the version including the NFC antenna. HP lists 821171-001 as the separate TouchPad version without that antenna, so the part numbers indicate a meaningful configuration difference. The guide also identifies the NFC module as a separate component, rather than part of this touchpad assembly.

The component is intended for servicing compatible notebook hardware; the referenced service guide describes its removal and installation as part of laptop repair. The source identifies the part for the EliteBook 840 G4 and EliteBook 848 G4 families, without specifying broader compatibility.