Since it's so new, be sure they offer the supplied OS to restore with. It's likely that the factory restore will fail so that's a loss. You may want to consider returning the unit for one that is without this new system.
I bought a brand new Sony S series and it was shipped with windows 7 and boots in UEFI mode. I have encryption software I need to install, and it's not compatable with UEFI mode. In my bios I see the option to change the boot mode to legacy, but when I do that and restart the computer I get this message 'operating system not found'. How can I run my computer in legacy mode? Do I have to re-install windows?