Small form factor with explosive speed! Faster and more efficient specification. Now, you can transfer large files, and video in 1/10th of the time.Host Interface: PCI Express 2.0 x1Total Number of USB Ports: 4Number of USB 3.0 Ports: 4Form Factor: Plug-in CardPackage Contents: USB 3.0 4-port PCI-e Controller CardUser ManualDriver CDPlatform Supported: PCGreen Compliant: YesGreen Compliance Certificate/Authority: WEEEPackage ContentsUSB 3.0 4-port PCI-e Controller CardUser ManualDriver CD