How do I use the interactive LED diagnostic viewer for the HP ProBook 450 G8?
To use the interactive LED diagnostic viewer, click on the desired external view (such as Top View, Left Edge, Right Edge, or Display View) to identify LED locations. Then hover over the information icon above each LED to review diagnostic information displayed in the right-hand pane. (Page 1)
From the official HP Probook 450 G8 Notebook PC manual, page 1
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