Inateck 2 Port PCIe USB 3.0 Card with Internal USB 3.0 20-Pin Connector – Expand Another Two USB 3.0 Ports, Compatible Mac Pro, No Additional Power Connection Needed

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No additional power supply for normal recognition and operation needed anymore, One Step Update your Windows Computer to USB3.0 Easily with PCI Express to USB3.0 Controller Adapter Card; 1 USB 3.0 20-pin Connector ( expand another two USB 3.0 ports )
Super Speed USB 3.0 supports transfer rates of up to 5 Gbps – The actual transmission speed is limited by the setting of the device connected.
Compatible with Windows XP/ Vista/ 7/ 8/ 10. Windows 10 and Mac 10.8.2 and more latest systems are built with a driver inherently. Windows systems earlier than Windows 10 and Mac OS earlier than Mac 10.8.2 require installing a driver in CD
With quick and easy installation, this USB 3.0 PCI express I/O Card; 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
Package: 1x USB3.0 PCI-E expansion card,1x driver CD, 1x low-profile PCI slot bracket, 1x mounting screw, 1x user manual