This product only contains the HDD box and data cable, not including the hard disk. Supports most 7mm/9.5mm 2.5 inch SATA I/II/III HDD and SSD up to 4TB. Ultra-Fast USB 3.0 and SATA III with SuperSpeed USB 3.0 has a maximum data transfer rate of 5Gbps. Supports UASP Protocol for increased data transfer speed and reduced CPU utilization. Tool-free installation, hot-swap plug and play, LED indicator, and compatible with Windows, Linux, and Mac.