HP ProBook 455 G8 fingerprint reader board replacement

Step-by-step HP ProBook 455 G8 fingerprint reader board replacement rewritten in our own words from HP's Maintenance and Service Guide, with page citations.

Part you needM21724-001HP fingerprint reader M21724-001 for the HP ProBook 455 G8
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On this page
  1. Applies to
  2. Tools and parts
  3. Preparation
  4. Replacement
  5. Part numbers in our catalog
  6. Manufacturer manual
Source: steps rewritten in our own words (no more than 8 words in a row copied; part numbers, screw sizes and warnings kept as printed) from HP's Maintenance and Service Guide (PDF, printed pages 34–43). Not bench-tested. We have not performed this repair; keep HP's manual open for its illustrations. Scope restrictions below are part of the guide: do not apply it to other models, generations or configurations. Service manuals are written for trained technicians; work at your own risk.

Labels: DOCUMENTED = taken from HP's manual; PROPOSED = our own joining or ordering of HP's directions, not an HP instruction; UNPERFORMED = a suggested check that has not been carried out.

Applies to

HP ProBook 455 G8. Confirm the exact model on the service label before starting.

HP ProBook 455 G8 Notebook PC fingerprint reader board replacement. HP prints this procedure on printed page 42 of its maintenance and service guide, and the spare-part table for this part is on printed page 42.

Tools and parts

  • Screwdrivers and a non-marking pry tool as HP lists for this procedure
  • Static-safe work surface
  • M21715-001 - Fingerprint reader board bracket (included in Bracket Kit). Source: printed page 42.

Preparation

Save your work and shut the computer down through the operating system, unplug AC power and every external device, and work on a clean, grounded, ESD-protected surface while sorting each screw by its original location. Handle every cable by its connector and put each one back in its own place during reassembly.

Replacement

  1. Get the machine ready for taking apart (the Preparation for disassembly section is on page 32). (printed page 34).
  2. Take the bottom cover off (the Bottom cover section is on page 32). (printed page 34).
  3. Detach the battery lead from the main board (the Battery section is on page 33). (printed page 35).
  4. Detach the lead out of the ZIF connector at the fingerprint reader board (1). (printed page 42).
  5. Undo the Phillips M2.0 × 2.5 fastener (2) that holds the fingerprint reader bracket to the machine, and after that take the bracket (3). (printed page 42).
  6. Take the fingerprint reader board from the machine (4). (printed page 43).
  7. Fit the replacement part by working back through the printed removal steps (printed page 43).

Part numbers in our catalog

Check each part page for its source and variant notes before ordering.

Manufacturer manual

HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-probook-455-g8-fingerprint-reader-board-replacement-p42

Key facts

HP document part number
M11675-001
Model
HP ProBook 455 G8
Release year
2021
Screen size
15.6"
Printed pages
34–43

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