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 49). 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 G9. Confirm the exact model on the service label before starting.
HP ProBook 455 G9 i/o board replacement. HP prints this procedure on printed page 49 of its maintenance and service guide.
Tools and parts
- Screwdrivers and a non-marking pry tool as HP lists for this procedure
- Static-safe work surface
N01502-001- I/O board. Source: printed page 49.N01915-001- I/O board cables (included in Cable Kit). Source: printed page 49.M21994-001- Network jack door (included in Plastics Kit). Source: printed page 49.
Preparation
Save your work, shut the computer down through the operating system, unplug AC power and every external device, and work on a grounded, static-safe surface.
Replacement
- Prepare the computer for disassembly and remove the bottom cover. (printed page 49).
- Take the battery out of the machine. (printed page 49).
- Unplug the leads, undo the retaining screws and lift the I/O board out. (printed page 49).
Parts this procedure uses
- HP cable N01915-001 (N01915-001)
- HP RJ-45 (network) jack door M21994-001 (M21994-001)
Part numbers in our catalog
- HP I/O board (N01502-001)
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-g9-i-o-board-replacement-p49