Notice how all the rest of the stickers are plush with the board? However the s/n stickers are purposely put on lose so when you need to do a return its lost and they cant do it. I have a mobo that needs to be returned however since the s/n sticker isn't there I doubt they will honor my warranty.
CM HAF912 Case / MSI Z590 A-Pro / 16 GB MEMORY / 2 TB SSD Samsung QVO/ Intel Core I5 10500 / EVGA RTX 3080ti FTW Ultra