Ideal for use with today's Ultrabooks and thin-and-light laptops, Transcend's SuperSpeed USB 3.1 Gen1 Hub transforms a single USB 3.1 Gen1 port into four, instantly expanding the number of high-performance 3.1 Gen1 devices you can connect to your computer at the same time. As it is USB bus powered with the cable attached, no extra power adapter is needed. Plus, the ultra slim and portable design allows you to transfer files wherever you go.