Features:
Super Speed USB 3.0 supports transfer rates of up to 5Gbps - The actual transmission speed is limited by the setting of the device connected.
Supports 2 downstream ports for all speeds.
Hot-swappable, plug and play; Low Energy Consumption.
SATA 15PIN power supply, sufficient and stable power supply to ensure stable operation of equipment.
Backwards compatible with USB 2.0 and 1.1 devices; Supports simultaneous operation of multiple USB 3.0/2.0/1.1 devices
Operating System Compatibility: Windows 10/8/8.1/7/Vista/XP 32/64-bit, Server 2003-2008 32/64-bit, Linux.
With quick and easy installation, this USB 3.0 PCI express I/O Card offers a simple solution for connecting to and using USB 3.0 devices on your standard desktop PC.
Enjoy copying videos, music, photos, data files between USB devices and the computer at blazing fast speeds. Firmware can be not only updated at any time, but upgraded directly online.

Specifications:
Main chip: Renesas uPD720201
Support interface: PCI-E 1X 4X 8X 16X
Support systerm: WinXP/Vista/Win7/Win8 32bit/64bit MAC10.8 and more
Conformance to PCI-Express 2.0
Conformance to USB 3.0 SuperSpeed
Conformance to xHCI 1.0
Maximum transmission rate up to 5Gbps, it is higher 10 times than 480Mb/s of USB2.0
Compatible below with USB2.0, USB1.1, USB1.0
Transmission rate: 5000/480/12/1.5Mbps
USB Power Output: 5V 2A(Max)