How can I find out which serial nunber is used in my computer?

[haru5ED3]

I am useing Photoshop CS6and5.5 on Windows 10.

Are there any ways to find out which serial nunber is used in my computer?

I wanna use one of them in new computer, but I have three numbers of Photoshop in my workplace. And I don't know either my Adobe ID or password. 

If I can't find the number, I am goingt to input each number on my new computer, to know if they are used or not.  Is it safe? or will it cause trouble on the computer which the number is used?

[haru5ED3]

I have three serial numbers, but I want to make it clear which number is used in my old computer.

[John T Smith]

Lost information https://community.adobe.com/t5/Premiere-Pro/Find-serial-number-without-Adpbe-ID/td-p/7769446
- page has links to programs to find an installed serial number in Mac or Windows

[John Waller]

Run Belarc Advisor on each computer.

https://www.belarc.com/products_belarc_advisor

It'll tell you everything you need to know about what is installed on each.