Features: Chipset: Renesas uPD720201+Genesys GL3520 Supports 5 x USB 3.0-TYPE-A  1 x19PIN 5Gbps Supports the following speed data rates as follows: Single-lane (x1) PCI Express throughput rates up to 5 Gb/s Fits any PCI Express x1, x2, x4, x8, or x16 socket Supports simultaneous operation of multiple USB 3.0/2.0/1.1 devices Molex power required Hot-swapping feature allows you to connect/disconnect devices without powering down the system

Operating Systems: Windows XP, Vista, and Windows 7 (with included drivers) Windows 8/8.1/10 - No additional drivers are needed for Win8/8.1/10 Windows XP and Vista Users Please Note: Due to OS limitations, the real transfer speed after installation of the respective drivers will be located between the level of USB 2.0 and 3.0