[Compatible with Windows 8]UtechSmart PCI Express to SuperSpeed USB 3.0 4-Port Expansion Card with 5V 4-Pin Power Connector for Desktops (Upgraded version: VLI VL805 chipset)
Price 18.99 - 29.99 USD
SuperSpeed USB 3.0 supports transfer rates of up to 5Gbps - The actual transmission speed is limited by the setting of the device connected. * Backwards compatible with USB 2.0 and 1.1 devices; * 5V 4-pin DC connector to power USB devices from your PC power supply. * 4 USB 3.0 downstream ports for standard desktop PCs. * Operating System Compatibility: Windows XP/Vista/7/8.