1) Fully Compliant with USB 2.0 Specification: Backwards Compatible with USB 1.1
2) Mini full speed 4 port USB 2.0 hubs
3) Maximum data transfer rate is 480 Mbps
4) Support up to 127 USB devices
5) Support Self-Powered Mode with optional external 2A AC adapter
6) Provide up to 500Ma per Port sufficient for diverse devices
7) Individual port over-current protection
8) Plug-and-Play
9) No driver installation required