Series S/X disc to digital question

You have names mixed up. There are no consoles named the Xbox One Series S or Xbox One Series X.

The Xbox One/One S/One X all have a disc drive.

The Xbox One S All Digital Edition does not have a disc drive.

The Xbox Series X has a disc drive.

The Xbox Series S does not have a disc drive.

All the consoles can play backward compatible games. The Series S and One S all digital edition can only play games digitally downloaded.

The other consoles can play games from disc and from digitally downloaded,

I hope this clears things up for you.

Any game that works on a Series X will work on a Series S and vice versa. Anything that is only listed as just Series X is usually the physical disc version since the Series S is only digital.

Fyi the xbox series s/x has no one in it

This is to reduce the confusion between series s/x and one when it comes to.compatibility

Only the xbox one s all digital is the only xbox one that isn't compatible with discs

However there is no limitation as far as xbox one other then the digital only console as far as xbox one games goes

Vs the series x /s they are backward with xbox one and with the series s limitation as far as discs goes

you cannot use disc based games on the series s, you need the disc in the drive to authenticate and prove you own the game. as the series s is all digital you would need the series x to play disc based games.

series x has disc drive and the series s does not

smart delivery is so it downloads the content for the specific console

hence why the game case has series x and xbox one advertised on it. the disc can be used in series x and xbox one consoles, the series s does not have a drive therefore requires digital purchase.