How to Find the Service Tag and Operating System Version on a Chromebook or Chromebox
Summary: Follow the steps for finding the Service Tag Number and Operating System (OS) Revision in ChromeOS.
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Instructions
Finding the Service Tag and OS Revision within ChromeOS
Locating the Dell Service Tag number or the OS revision for a Chromebook can be difficult for users not familiar with the Chrome Developer Mode (Dev Mode).
The instructions below show how to locate the Service Tag number and OS revision of a Chromebook, Out of the Box (OOB) or after Power Washing the Chromebook.
Need help with another Dell device? Check out our guide to find the Service Tag, Express Service Code, or Serial Number.
Locating the Service Tag
On a new Chromebook or one that was Power Washed, when you get to the Chrome Welcome screen, press the ALT + V hotkey combination and you see a string of numbers in the upper right corner of the screen.
The string begins with the ChromeOS version and ends with the Service Tag number. (Highlighted in red in the image above)
Affected Products
Chromebox, Chromebook, Chromebook, Chromebook, Latitude 3445 Chromebook, Latitude 5400 Chromebook, Latitude 5430 ChromebookArticle Properties
Article Number: 000175440
Article Type: How To
Last Modified: 12 Sept 2025
Version: 8
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