External USB hard drive size limit on Xbox series x?

16TB is the max size you an format

Hello JK2010M, I am an independent advisor and I will be happy to help you today. My name is Khaji

Both the Xbox Series X and S support external USB drives. However, unlike previous Xbox consoles that allowed you to play those games from the external USB drive, you won't be able to play games optimized for Series X|S consoles from USB drives. External storage requirements are that the capacity must be 128GB or more

I haven't found specific information on an upper limit for external storage drive size on the Xbox Series and then try again on the Xbox. If that doesn't work, I would recommend you contact Xbox support for further help

Thank you very much for your patience and understanding! If you need anything else, do not hesitate to contact us again.

You can use external storage on Xbox one, but it must be an external USB 3.0 hard drive. Flash drives are not supported as a storage device - they only work for video playback. The minimum size of HDD is 256GB, there is no upper limit. You can install
all future games to these hard drives.

Hi,

If your game is now a Series X optimised title, it can no longer be played off an external hard drive. It must be moved to either the internal storage or an optional expansion card.

External USB hard drives are too slow to play Series X optimised games. None Series X games will still run from your external drive. The internal storage in the Series X is a fast NVME SSD. These drives are several times faster than mechanical hard drives.

Hi,

External hard drives are not fast enough for Xbox Series X|S titles. Unfortunately you can't play these games off slow USB external hard drives. They need either be installed internally or to an optional Xbox Series X|S Expansion card.