Locating Id Labels - HP Z420 User Manual

Locating ID labels

To assist in troubleshooting, product, serial, and authentication numbers are available on each
computer.
All workstations have a serial number (unique for each workstation) and product number. Have
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these numbers available when you contact support.
The Certificate of Authentication (COA) is used for Windows-preinstalled systems only.
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A Service label shows the Build ID and FeatureByte strings, which are needed for system board
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replacement.
In general, these labels can be found in these locations (your computer may look different):
On the top, rear or bottom of the chassis (tower and desktop configuration)
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On a pull-out card on the side of the display (all-in-one configuration)
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Figure 6-1
Figure 6-2
34 Chapter 6 Diagnostics and Minor Troubleshooting
Tower and desktop label locations
All-in-one label locations