This is a simple and useful process for obtaining your Dell computer service tag (serial number) and lookup your system configuration.
The Service Tag is a five to seven character alphanumeric code that uniquely identifies your computer to Dell. It’s usually on a little sticker pasted on the back of the computer or on the rear of a server. The problem I often run into is reading the thing.

Obtain the Service Tag (Serial Number)
The Service Tag (serial number) should be printed on the bottom of your computer. If it is missing, scratched off, or not readable, there’s an automatic way to look it up.
With any computer purchased used on eBay, Craig’s List, from a pawn shop, or other source with unknown history, it’s possible that the Service Tag may be incorrect. If the system board (mother board) has been swapped out, you won’t know the Service Tag number for sure unless you run this process.
- From the Start Menu type CMD and press Enter.
- From the Command Prompt, type: wmic bios get serialnumber
- Press Enter
- The serial number should be displayed.
Lookup the System Configuration
On the Dell website, you can lookup the system configuration based on the computer serial number. A quick lookup will reveal the original system configuration. There’s also a utility on Dell’s website that will scan your system and give you the latest configuration information.
- Go to http://www.dell.com/support/
- Look for this text “Enter a Service Tag or Express Service Code” and enter your Service Tag there.
- Click Submit.
- On the resulting page there is a lot of information available by clicking on the various tabs and links.
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Note: Thanks to Makur for assisting with the above article.
While checking the warranty status or seeking support for your Dell laptop, you may encounter pages on the Dell support website that request the serial number of the computer. Depending on the computer, the Dell website may also refer to the serial number as the 'service tag' or 'express service code.' The unique serial number that identifies your Dell laptop is hard-coded in the main system board and printed on a label affixed to the bottom of the computer.
Step 1

Dell Service Serial Number Lookup
Examine the bottom of the laptop for a sticker with a bar code, and the words 'Service Tag' or 'Express Service Code.' The serial number consists of five or seven letters and numbers. If your Dell laptop no longer has the serial number affixed to the bottom, continue to Step 2.
Serial Number Lookup For Equipment
Step 2
Open Internet Explorer and navigate to the Dell System Profiler webpage (see Resources). This webpage only works with Internet Explorer 5.5 and later.
Step 3
Dell Service Tag Serial Number Lookup
Review the privacy statement displayed regarding the information the Dell System Profiler collects about your computer, and then click 'Yes, I do agree.'
Serial Number Lookup Iphone
Step 4
Confirm the bar at the top of the Internet Explorer window contains the words 'DellSystemLite from Dell Inc.' Click the bar, and then click 'Install this add-on.'
Click the 'Install' button in the security notification window that appears. The webpage refreshes and displays the Service Tag and Express Service Code for your Dell laptop.
Tip
- The Express Service Code and Service Tag for your Dell laptop are the same serial number; the Express Service Code contains numerals only, for entry using a telephone keypad. If you need the serial number of your Dell laptop for the Dell support website, you can enter either number.
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