Adds four external SuperSpeed USB 3.0 5Gbps Type-A ports to your PCIe enabled desktop computer Adds four SuperSpeed USB 3.0 Type-A ports to your desktop system Complies with PCIe 2.0 standard with high performance NEC uPD720201 chipset Compliant with USB data transfer rates - Low-speed (1.5Mbps) / Full-speed (12Mbps) / High-speed (480Mbps) / SuperSpeed (5Gbps) Compliant with Intel's eXtensible Host Controller Interface (xHCI) Revision 1.0 specification Compliant with USB legacy and UASP mode (UASP requires Windows 10 and 8 native USB 3.0 host drivers only) PCI Bus Power Management Interface Specification Revision 1.2 Dual-profile design installs into different system form factor chassis with the included full and low profile brackets Each USB port features over-current protection to protect your connected device from power surges