SYBA 2 Port USB3.1Type-A PCI-E 3.0 x4 Model SD-PEX20185 Type: PCI Express to USB Card External USB Ports: 2x USB Ports External Ports: 2 port USB 3.0 Operating Systems Supported: All Windows OS Specifications: Includes: User Manual + Driver CD Package Contents: 1x USB3.1 Type-A Controller Card 1x Driver CD 1x User Manual 1x Low Profile Bracket