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Find the Service Tag of Your Dell Desktop or All-in-One

Dell uses product identifiers such as Service Tag, Express Service Code, or Serial Number to access product information like technical specifications, documentation, warranty. Get personalized support options by identifying your Dell product using the Service Tag, Express Service Code, or Serial Number.

  • Service Tag is a seven alphanumeric code.
  • Express Service Code is a 10 to 11 digit, numeric version of a Service Tag.

NOTE: Dell accessories and devices such as keyboard, mouse, headset, external hard drive, do not have a Service Tag or Express Service Code. Identify these devices using the model number on to access product documentation. Dell technical support can identify such products using the Dell order number. Learn how to find the Service Tag of a Dell monitor or Service Tag of a Dell docking station.

Method 1: Using the Service Tag Label

On Dell desktops or all-in-one computers, the Service Tag or Express Service Code label is located on the top panel, side panel, or back panel.

Example of a service tag or express service code label

Method 2: Using SupportAssist app

On Windows devices, use the SupportAssist app to automatically scan your Dell computer and identify the Service Tag.

  1. Click Start.
  2. Search and open the SupportAssist app.
  3. The Service Tag is located at the top-right of the SupportAssist app.

Service Tag of the desktop in SupportAssist app

Method 3: Using the BIOS interface

The Service Tag is available in the BIOS or UEFI of Dell computers.

  1. Turn on or restart the computer.
  2. At the Dell logo screen, press the F2 key several times to access the BIOS or UEFI interface.
  3. The Service Tag is available under the System Information or Overview section.
    NOTE: The BIOS or UEFI interface may vary on your Dell desktop. To learn how to navigate the BIOS, see the user manual of the Dell desktop.

Method 4: Using the Command Line

The Service Tag can be identified by running a simple command-line instruction on desktops running Windows or Linux-based operating systems.

Finding the Service Tag using the Windows Command Prompt

  1. Click Start and search for command prompt or cmd.
  2. Open the Command Prompt app.
  3. To get the Service Tag, type wmic bios get serialnumber and press Enter.

Service Tag of the desktop using Windows command prompt

Finding the Service Tag using the Linux terminal

  1. Open terminal using the keyboard shortcut CTRL + ALT + T.
  2. To get the Service Tag, type sudo dmidecode -s system-serial-number and press Enter.
    NOTE: To run a sudo command, you must log in as a superuser or administrator. When prompted, enter the administrator password.
An image of the terminal window in Ubuntu

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