The perfect companion for your Mac Mini. OWC MiniStack external Hard Drive with a 4 TB Capacity. Please note: USB 3.1 (USB-A) Connector. In fantastic condition. This was used as an extra storage drive for a 1 person professional studio. It was purchased in 2017 and well maintained in a clean, dust-free environment.I have included Tech Tool reports on the Blocks -- no bad ones -- and the Smart Check. This drive was reinitialized and formatted. Powers up right away and is very quiet.I have the original box, cable, and power adapter.