HDE PCI-E to USB 3.0 4-Port PCI Express Expansion Card (PCIe Card) 4 USB 3.0 Ports SuperSpeed 5Gbps Data Transfer with 4 Pin Molex Power Connector VL805 Chipset Quick and easy installation, adds 4 additional USB 3.0 Type A connections to your desktop computer Plug and play card installs in any available PCI Express slot and is powered via 4-pin molex connection to power supply SuperSpeed transfer rates offer speeds up to 5Gbps | Backwards compatible with USB 2.0 and 1.1 devices Supports xHCI 1.0 and Microsoft's USB Debugging Port Capability and is Windows Hardware Certification Kit (WHCK) certified Supported Operating Systems: Windows 10 / 8 / 7 / Vista / XP | Supports both 32 and 64 bit versions of Windows