Package Contents: BYEASY 4 ports USB 3.0 Hub, user manual, 30-Day Money Back Guarantee and 24 hours friendly customer service. Universal Compatibility: This USB adapter is designed with wide compatibility, can be used for most of USB A devices like iMac, Macbook, Mac Pro / mini, Surface Pro, XPS, Notebook, PC, Mobile HDD. Ultra Slim & Portable: USB splitter is compact and lightweight. Perfect for on-the-go use! You can easily put it into your pocket easily, ideal for office, travel and school. High-Speed Data Hub: USB 3.0 hub provide you a stable, consistent connection with data transfer speed up to 5Gbps, which is 10 times faster than USB 2.0, fast enough to transfer an HD movie in seconds. USB Hub: Instantly expand the single USB A port into 4 standard USB 3.0 female ports. Plug and play using 4 ports simultaneously, increg your work productivity and efficiency.