Switch serial number - manufacture date

[Mark_Robinson]

I'm looking to retrieve the manufacture date on Extreme / Enterasys switches. Found this article https://extremeportal.force.com/ExtrArticleDetail?an=000089269 It states the first two digits are year and the 3rd/4th digits is week of manufacture along with an alpha (manufacturer) and five more digits after that.

My serial numbers have 7 digits after the first 4 digits then an alpha like A, B, E, H, J, F. Am I to assume those 7 digits after the first 4 are unique designations? Is there a document which explains the alpha at the end? Example. My serial number is 12345678901A. Looking for more details on these serial numbers.

[Anonymous]

Hello Mark,
The first 4 are the year and week code. (YYWW) So in your example: 12345678901A, it would have been manufactured 2012 week 34. The last 2 digits are the revision of the board, from a manufacturing perspective. The other stuff in the SN doesn't really matter all that much. Just something for us to tell the different units apart.

[Mark_Robinson]

Chris. Appreciate the details. This helps us document the aging equipment. Cheers!

[Patrick_Voss]

Hello Mark,

The article you are reading explains the S/N for the EXOS based devices. The S/N example you have provided looks like a EOS based device. At the moment I do not know the EOS S/N scheme.

[Mark_Robinson]

Good catch. These S/N are EOS switch devices. Will keep looking for a document. Thanks.