1.FebSmart FS-A5-Pro allow users add 5-Ports 10Gbps USB 3.1/3.2 Gen 2 type A on desktop computers by PCI Express X4 slot. The 5X USB 3.1/3.2 Gen 2 USB-A ports will share 16Gbps total bandwidth. Each USB-A port can get super speed plus 10Gbps max data tramsfer speed for USB 3.1/3.2 Gen 2 peripheral device, such as SSD enclosure, external HDDs, VR system, USB hubs etc. | 2. Build in FebSmart Self-Powered Technology. No need to plug any power cables from PCs power source, but get each USB port 5V/3A (5V/15A, 75W in total, support BC1.2 fast charging) max power supply. Ensure all connected USB 3.1/3.2 Gen 2 device running super speed plus 10Gbps max. Enjoy super easy installation with Plug & Play use. | 3.Based on ASMedia ASM3142 the 3rd generation USB 3.1/3.2 Gen 2 host controller and the latest VIALab VL822 USB 3.1/3.2 Gen 2 hub controller. Supports USB 3.1/3.2 Mutiple INs function, will auto-coordinate each USB port banwidth. The Added-on Heat-Sink will help PCIE USB card core components stay away from overheat, make sure connected USB device always stay at peak speed. | 4.Compatible System: 1. Plug and Play on MAC OS 10.5.x, 10.6.x, 10.7.x, 10.8.x, 10.9.x, 10.10.x, 10.12.x, 10.13.x, 10.14.x,10.15.x and later system.NOT works on MAC OS 10.11.x system.2. Driver free on Windows 10,8.1,8, and Windows Server 2012,2012R2,2016,2019(32/64bit), Need to install driver on Windows 7, Windows Server 2008,2008R2(32/64bit). 3. Supports most of main stream Linux system. | 5.WARNNING:1. Compatible with PCIE X4, X8, X16 slot, NOT works on PCIE X1, X2 slot. 2. Please use this card on PCIE 3.0 X4 slot with USB 3.1/3.2 gen 2 device or can not get peak speed.3. The USB-A port 1,2,3,4 support BC1.2 fast charging function, please check product description carefully before purchase.4.Life time Email technical support,users can contact us by the Email address printed in package box.