Add 3 SuperSpeed USB 3.0 ports and a RJ45 Gigabit Ethernet Jack to your USB 3.0 enabled computer, provide ultra-fast data transfer rates of up to 5 Gbps (10 times faster than USB 2.0), also backwards compatible with USB 2.0/1.1 and support all USB devices such as card reader, flash drive, etc.1 gigabit ethernet port gives access to superfast network speeds, backward compatible with 10/100 ethernet.USB Bus-Powered, no additional power adapter. Has over-current protection built into each port to protect both connected devices and your hub from power surges.Built-in surge protection keeps your devices and data safe and supports hot swapping.