The UGREEN US221 is a portable external enclosure designed to turn your 2.5-inch SATA HDD or SSD into a convenient mobile storage device. It utilizes a SATA 3.0 internal interface with speeds up to 6 Gbps, while the USB 3.0 Type-A connection provides external transfer rates of up to 5 Gbps, allowing you to move large files quickly. Support for UASP protocol ensures that the data transfer process is even more efficient. Constructed from lightweight plastic in a slim, black finish, the device weighs only 113g and measures 82 x 128 mm, making it easy to slip into a bag for daily travel. It supports drives up to 6TB in capacity, which is a great option for those who need to carry a vast library of documents or media. The package includes a 0.3m USB 3.0 cable to get you started immediately.