Clone USB disk to SD card

What device?

Quote from Martynet

Or is the only way to transfer it the "Backup" app and restore in Programs in KODI?

Easier if you use the Backup/Restore function included in LibreELEC, you would have to copy/move only one file.

If it's an S905 you should be able to clone the stick to an sd card - I've used win32diskimager or usbit in windows for that. That only works if the card you're copying to is at least as big (to the bit) as the stick you're starting with though, and obviously cloning eg an 8GB stick to a 16GB card will leave you with a lot of wasted space. So if they're nominally the same size it might work but not definitely.
Otherwise the easiest option is as vitorp07 suggested above - make a backup using the built-in backup in libreelec settings. New install of libreelec on the sd card, boot it up and restore the backup.

Quote from trogggy

If it's an S905 you should be able to clone the stick to an sd card - I've used win32diskimager or usbit in windows for that. That only works if the card you're copying to is at least as big (to the bit) as the stick you're starting with though, and obviously cloning eg an 8GB stick to a 16GB card will leave you with a lot of wasted space. So if they're nominally the same size it might work but not definitely.
Otherwise the easiest option is as vitorp07 suggested above - make a backup using the built-in backup in libreelec settings. New install of libreelec on the sd card, boot it up and restore the backup.

Would it be a Micro SD card that the Neo uses?

Quote from Vinylity

Would it be a Micro SD card that the Neo uses?

I don't own one, but I'd be amazed if it wasn't.

Quote from trogggy

If it's an S905 you should be able to clone the stick to an sd card - I've used win32diskimager or usbit in windows for that. That only works if the card you're copying to is at least as big (to the bit) as the stick you're starting with though, and obviously cloning eg an 8GB stick to a 16GB card will leave you with a lot of wasted space. So if they're nominally the same size it might work but not definitely.
Otherwise the easiest option is as vitorp07 suggested above - make a backup using the built-in backup in libreelec settings. New install of libreelec on the sd card, boot it up and restore the backup.

This method works perfectly. All Kodi settings were restored exactly as they were when I backed them up.