SUNIX USB3.0 4-port PCI Express Host Controller with SATA Power Connector Model USB4300NS Type: PCI Express to USB Card External USB Ports: 4 port USB 3.0 Standard: USB 3.0 Data Transfer Rate: Up to 5.0 Gbps Operating Systems Supported: Windows XP/2003/Vista/7/2008/8/8.1 (32/64-bit) Specifications: Interface: Single-Lane (x1) PCI Express Gen2 Controller: Renesas uPD720201 Power Input: SATA Type Power Connector Power Output: +5V / 900mA (each port) Bracket: Standard 121mm Dimensions: 78 (W) x 99(L)mm