HP Notebook - Manual (Page 35)

Hardware
Labels
The labels affixed to the notebook and some notebook
components provide information you may need when
troubleshooting system problems or traveling internationally
with the notebook.
The Microsoft Certified of Authenticity label contains the
Product Key number. You may need this number to update
or troubleshoot the operating system.
The system label provides regulatory information about the
notebook.
The product identification label contains the serial number
of the notebook and a code describing the original
configuration of the notebook. You will need the notebook
serial number if you call customer support.
The modem approvals label, which is affixed to an optional
internal modem, provides regulatory information.
Wireless certification labels, which are specific to various
types of optional wireless devices, are affixed to the
notebook and provide regulatory information.
Startup and Reference Guide––Part 2 2-15