USB 3.0 PCIe Adapter Card PCI-e to USB 3.0 Expansion Card Adapter Hi Speed 5Gbps Data Transfer Rate, UASP support Build in Self-Powered Technology-Users do not need to plug any additional power cable on board (only PCIe slot) and get each port 2A (8A in total) max power supply for high power-consuming data device like Hard drive disc. Enjoy super easy installation with Plug & Play Supports Simultaneous Operation of Multiple USB 3.0, USB 2.0 and USB 1.1 Devices Hot-Swapping Feature that Allows You to Connect / Disconnect Devices without Powering Down the System