Avolusion&reg; (AVXBOXHD-N4T) 4TB XBOX One External USB Hard Drive Expansion Kit- 2 Year Warranty (Nyko Data Bank + 4TB HDD) Build-in 4TB Storage Capacity for XBOX One Game Console Instantly upgrade the storage capacity of the Xbox One Store massive games & video Plug and Play, No need to open the XBOX One console chassis. 2 Years Warranty from Reseller