Fully Compliant with USB 2.0 Specification. Backward Compatible with USB 1.1. Maximum data transfer rate is 480 Mbps. Connects up to 2 devices without a power adapter. Individual port over-current protection. Plug and Play No Driver installation required.A universal serial bus (USB) connector is a connector between a computer and a peripheral device such as a printer, monitor etc. 1. Indicator Light Status 1 Power LED. 2. 4 USB Port. 3. for PC Users. 4. Pentium Processor based Computer with 5. USB 2.0 port available. 6. Windows 98 SE, 2000, Me, XP, Vista, 7 or 8. 7. For Mac Users.