The HD650 is back stronger and bigger than before. Its impact absorbing rubber coating and three layer construction make it extremely durable to protect your contents, all while looking cool. We now offer it in three colors blue, black, and red. Capacity goes up to 4TB, a milestone for unpowered external hard drives With USB 3.1 speeds and ADATA backed quality, the HD650 delivers spacious and secure storage. Data fidelity keeps increasing, and files continue to grow. Videos are in 4K and will soon be 8K, games are massive, and on it goes. The time has come for larger drives. We're proud to offer the HD650 in up to 4TB, significantly larger than previous generation external HDDs, with USB 3.1 speeds and no power supply.