Smart Interactive Achieved with FL1100 USB3.0 Host Controller Based on GoXtream xHCI Accelerator Engine,ORICO PFU3-2O2I Turbo USB3.0 PCI Express Card add 2x Rear USB3.0 Ports and 1x Internal USB3.0 20PIN Header for your Computer via PCI Express Slot Offer Transfer Rates Up To 5Gbps,10x Faster of USB2.0 and Backward Compatible with USB2.0,1.1 or 1.0.4PIN IDE/ATA Power Connector allow Power the Card via Power Supply of Computer and offer 5V 900mA Power for each Port.Integrated Filtering Unit with Solid State Capacitors allow a Reliable and Secure Connectivity. ORICO PFU3-2O2I Compatible with both Mac OS and Windows.It will be a Key Solution for you Update your Mac or Windows Computer to USB3.0 and Transfer Your Files in a Breeze. Installation & Compatibility -This Item Compatible with Mac OS X V10.8.x with Nature Driver,No Additional Driver and Application needed -Driver is needed for other Mac OS.Please Contact ORICO Customer Care Team for GenericUSBXHCI Open Source USB 3.0 xHC driver when mounting under Earlier or Later Mac OS -This Item Compatible with Windows XP , 2003 , Vista , 2008 , 7 & Windows 8 32 or 64 Bit with WHQL Certified Driver -Both Standard & Low-Profile PCI Slot Cover included.Fit Any PCI Express x1 , x2 , x4 , x8 or x16 Slot,Can"t Fit PCI Slot -A 15PIN SATA Power Connector in Available Hard Drive Bay and A 15PIN Male to 4PIN Female Cable (NOT Included in the Box) is Required for The Power Supply of This Item.Please ensure you do have the Cable and connect the Card to 15PIN SATA Power Connector in Hard Drive Bay with it What"s in the Box 1x ORICO PFU3-2O2I 1x Low-Profile PCI Slot Cover 1x Mounting Screw 1x Driver CD 1x User"s Manual 1x Warranty Card