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 EliteBook 645 G9. Confirm the exact model on the service label before starting.
HP EliteBook 645 14 inch G9 Notebook PC I/O board replacement. HP prints this procedure on printed page 53 of its maintenance and service guide, and the spare-part table for this part is on printed page 52.
Tools and parts
- Screwdrivers and a non-marking pry tool as HP lists for this procedure
- Static-safe work surface
N01284-001- I/O board for use in models with a Ryzen PRO processor. Source: printed page 52.N01502-001- I/O board for use in models without a Ryzen PRO processor. Source: printed page 53.N00097-001- I/O board cables (included in Cable Kit). Source: printed page 53.M21396-001- RJ-45 (network) jack door. Source: printed page 53.
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
- Get the machine ready for taking apart (the Preparation for disassembly section is on page 40). (printed page 43).
- Take the bottom cover off (the Bottom cover section is on page 40). (printed page 43).
- Detach the battery lead from the main board (the Battery section is on page 50). (printed page 43).
- Detach the leads from the wider ZIF connector (1) and the narrower one (2) on the I/O board. (printed page 53).
- Take the three Phillips M2.0 × 4.0 fasteners (3) that hold the board to the machine, and after that take the network jack door from the board (4). (printed page 53).
- Take the board from the machine (5). (printed page 53).
- Fit the replacement part by working back through the printed removal steps (printed page 53).
Parts this procedure uses
- HP cable kit (I/O, USB 3.0, touchpad, fingerprint, NFC, card reader cables) (N00097-001)
- HP RJ-45 door M21396-001 (M21396-001)
Part numbers in our catalog
- HP I/O board (models with a Ryzen PRO processor) (N01284-001)
- 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-elitebook-645-14-inch-g9-i-o-board-replacement-p53