Just insert the device into the PCI-E slot of your motherboard, then you own USB 3.0 ports immediately. PCI Express (PCI-E) is a standard interface on most types of motherboards. With PCI-E, the device provides high-speed data transfer rate between PC and USB 3.0 devices, up to 5Gbps; thus, you may directly enjoy high-resolution videos, music, photos stored in your USB 3.0 storage, other than copying them to your PC in advance. The device offers 4 USB 3.0 ports, and each backwards compatible with USB 2.0 and USB 1.1, making it easy to copy files and enjoy videos simultaneously.Fully compliant with PCI Express Base Specification Revision 2.0, compliant with Universal Serial Bus 3.0 specification Revision 1.0. Single-lane (x1) PCI Express throughput rates up to 5 Gbps. 4 USB 3.0 ports, support the following data transfer rate: low-speed (1.5Mbps)/full-speed (12Mbps)/high-speed (480Mbps)/super-speed (5Gbps). Support simultaneous operation of multiple USB 3.0, USB 2.0 and USB 1.1 devices. Built-in 4-pin power connector for receiving extra power supply from system. Hot-swapping allows you to connect/disconnect devices without powering down the system. Support for Win 7/8//10/Vista/Windows XP.