Adds four independent external SuperSpeed USB 3.0 5Gbps Type-A ports to your PCI Express (PCIe) enabled desktop computer Features four independent SuperSpeed USB 3.0 Type-A ports delivering up to 5Gbps data transfer per port for a total USB bandwidth of up to 20Gbps Industry recognized high performance Renesas uPD720202 chipset Supports the following speed data rate as follows: Low-speed (1.5 Mbps) / Full-speed (12Mbps) / High-speed (480 Mbps) / Super-speed (5Gbps) Compliant with Intel's eXtensible Host Controller Interface (xHCI) Specification Revision 1.0 Compliant with PCIe 2.0 standard Supports USB legacy function and UASP mode (UASP requires Windows 10 and 8 embedded drivers only) Supports PCI Bus Power Management Interface Specification Revision 1.2 Low-profile bracket design fits lower size system form factor with included low profile bracket Each USB port featured with independent over-current protection to further protect your devices and the board itself from unforeseen power spikes