Features: 1.Fast: The USB 3.0 expansion card supports USB 3.0, and the speed can attain 5GB or S. Let you transfer data faster. 2.2 Ports: This pci e to USB adapter board has 2 USB ports, allowing you to connect two devices at the same time. 3.Simple Operation: PCI E to USB hub is simple and quick to install, connect, and use, and is compatible with multiple computer operating systems. 4.Stable: PCI E to USB adapter card is compatible with PCI E x1 or x4 or x8 or x16, and the PCI E interface can provide stable power supply. pci e for usb can solve the problem of few usb interfaces, and the card is very small. 5.Support Operating System: For windows xp 32 or 64 or for windows 7 32 or 64 or for windows8.1 or for windows10. specification:Item Type: USB3.0 Expansion Card Material: PCB, Metal Bus Interface: PCI-E x1 Compatible Slots: PCI-E x1 or x4 or x8 or x16 USB Interface: 2 USB 3.0 Transmission Rate: USB 3.0: 5GB or S PackageList:1 x USB3.0 Expansion Card2 x Screw1 x Driver CD Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.