It is 1TB storage, and updated to the latest firmware.
Microsoft Xbox One X Home Console Black Grey HDMI CYV-00007 Microsoft Xbox One
Microsoft Xbox One X Black Home Console for Microsoft Xbox One HDMI Connectivity
Microsoft Xbox One X 1TB Console, Black, 18.5" x 12" x 5" (Refurbished) (Renewed)
Microsoft Xbox One X 1TB Console with official xbox one pad and HDMI/power lead
