Seagate Expansion Portable 4TB external hard drive (model SRD0NF1, P/N 1TEAPF-500, 2018). USB 3.0, powered entirely over USB — no mains adapter needed. Includes original USB 3.0 cable. Fully working, freshly formatted and wiped. Good used condition (see photos). Plug-and-play with Windows; easily reformatted for Mac.
