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ThinkPad NotebooksThinkPad T400 / T500 and newer T series Laptops Knowledge Base

Product number or machine type and model identification


How to find a product number or machine type and model?


There are many ways!


The product number is 7 characters e.g. 4286-CTO. The first 4 numbers are the machine type, and the last 3 characters are the model.


1. Find the label:




2. Use System Information:


Go the the Windows System Information Accessory (Start>All Programs>Accessories>System Tools>System Information, or just Start then type System Information in the search/run box).


3. Read it from BIOS:


Press F1 when you see the Lenovo/ThinkPad logo during start to enter BIOS.


4. Use The ThinkVantage Toolbox:


Start>Control Panel>Lenovo's System Healh and Diagnostics. If it is not installed, get it from here:




5. Get it from the command line:


Open a Command Prompt (filename: CMD.EXE) and issue either of the following commands:     


For all info:

c:\windows\system32\wbem\wmic.exe csproduct list full


For just the product number:

c:\windows\system32\wbem\wmic.exe csproduct get name


For just the serial number:

c:\windows\system32\wbem\wmic.exe csproduct get identifyingnumber

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