HP Probook 450 G9 Maintenance And Service Manual page 4

Important notice about Customer Self-Repair parts
Your computer includes Customer Self-Repair parts and parts that should be accessed by only an authorized
service provider.
IMPORTANT: See "Removal and replacement procedures for Customer Self-Repair parts" for details.
Accessing parts described in "Removal and replacement procedures for authorized service provider parts"
can damage the computer or void your warranty.
iv Important notice about Customer Self-Repair parts