1: 4 downstream <usb3.0 A-type> ports and 1 upstream port.
2: compatible USB specification 1.1 and 2.0.
3: supports High-speed<5G Mbps>,Full-speed<480Mbps>and Low-speed<12Mbps>USB device profiles.
4: per-port Over-Current detection and protection<when power adaptor connected>
5: supplies USB bus power <when power adaptor connected>.
6: automatic switching between self-powered and bus -powered mode supports plug&play.
7: pocket size with USB 3.0 A-type connector.
8: support MS windows 2000XP/Vista/7/Mac OS <10.X or above>/Linux.