Xbox One has non-replaceable hard drive, external storage is supported

[Putin]

ightsurge said:

You're thinking of the PS4. PS4 doesn't support external storage,  but supports upgrading internal storage. Xbox One does not allow internal storage replacement but DOES allow external HDD and Flash Drives.

Hope that helps :)

First things first. External storage for what exactly? For games or for everything?

If I wanna to play video from my external HDD, it still called "external HDD" for that console. If that quote from Nelson is right, then XBO don't support external storage. Like for everything. But I think he meant games only, because if not, it pretty stupid.