1.This FS-U7-Pro allow users add 7 USB 3.0 ports (5-Ports external and 2-Ports internal) on desktop computers by PCI Express(1X) slot/interface. The added-on USB 3.0 ports can provide superspeed 5Gbps max(totally) for videos, audios, photos and more files data transfer. | 2.Build in FebSmart Self-Powered Technology.Users do not need to plug any additional power cable on from power source and get 5V/12A max power supply for high-power consuming data device (NOT support fast charging) such as HDD/SSD enclosure, VR sensor etc. Plug & Play on most main stream Windows/Linux system. Enjoy super easy installation. | 3.Select high performance RENESAS USB 3.0 host controller and RENESAS USB 3.0 hub controller. Build in more technology:1. Added-on 4X power module to provide 12 ampere (each port 5V/2A max) current ensure adequate power supply for USB device. 2.Designed 8X electric circuit protector,7X voltage stable capacitance and 7X voltage stable inductance to protect data safety than ever. | 4. Compatible System: 1. Plug and Play on Windows 10,8.1,8(32/64bit) and Windows Server 2012,2012R2,2016,2019.2. Need to install driver on Windows XP, Vista,7(32/64bit) and Windows Server 2003,2003R2,2008,2008R2(32/64bit).3. Works on most main strean Linux systems, no tech-support on Linux PCs. 4.NOT for MAC OS system. | 5.WARNING:1. Please install driver for USB card on Windows 7 and before version systems.2. Not works on slim PCs, No low-profile bracket inside.3. Make sure PCs mother board have spare PCIe slot for PCIe USB card.4. Make sure USB device is USB 3.0 or can't get USB 3.0 speed.5. All USB ports share 5Gbps banwidth.