iPod MA005LL/S vs MA005LL/A

[dansgil]

Recently, my iPod nano (4GB white) stopped working so I took it into an Apple Store and it was replaced. The sticker with the serial # & part number was MA005LL/S instead of the usual MA005LL/A. What is the "S" for? Why the change?

Thanks

 

[ipodcentral112]

It most likely has to do with the production time period and / or the version, as their are many different versions of the mainboards in these ipod nanos.