Superspeed USB 3.0 supports transfer rates of up to 5Gbps - The actual transmission speed is limited by the setting of the device connectedSupports up to 7 USB 3.0 devices: 5 USB 3.0 port hub and 1 internal 20pin connector for expanding another two USB 3.0 portsInclude with SATA 15-pin male to dual SATA 15-pin female power Y-Cable - 6.4 inches + 4-pin male to dual SATA 15-pin female power Y-Cable - 8 inches(the cable in older computers without 15pin SATA power connector is used to 4pin convert to SATA ports)Backwards compatible with USB 2.0 and 1.1 devices; Operating system compatibility: Windows XP/Vista/Server/7/8/10, LinuxWith quick and easy installation, this USB 3.0 PCI express I/O Card offers a simple solution for connecting to and using USB 3.0 devices to your standard desktop PC. Enjoy copying videos, music, photos, data files between USB devices and the computer at blazing fast speeds.