Product Details ‣ Capacity : 2TB/1TB ‣ Write Speed:150MB/s minimum data transfer ‣ Interface : USB 3.0 connectors and type-c connectors Contents in the box ‣ 1 x Kingston drive ‣ For PC is the normal USB 3.0 port.( support backward-compatible with USB 2.0 ports.) About real capacity 1TB = approximately 950GB-999G 2TB = approximately 1950GB-1999GB This is calculation difference between manufacturer and your PC, please Google 'Memory card capacity' to get more information. Vendors are using Flash memory decimal arithmetic: 1 MB = 1000KB, 1G = 1000 MB Calculated, operating system with binary arithmetic: 1 MB = 1024KB, 1 GB = 1024 MB; So there are some differences between display capacity and nominal capacity of flash memory products.The pursuit of the perfect person is not recommended to buy.