SAWAKE 4 Port Pin USB 3.0 PCI-E Card PCI Express Panel Computer Connector Adapter 5Gbps SuperSpeed USB 3.0 supports transfer rates of up to 5Gbps/625MB/s, the actual transmission speed is limited by the setting of the device connected. Backwards compatible with USB 2.0 and 1.1 devices; Operating System Compatibility: Windows XP / Vista / 7 / 8. Extremely fast and high-capacity data transfer solution, supports 2.5Gbps PCI-E bus with full duplex channel. 4 pin power connector available for some high current consumption peripherals, like drives, Plug & play and hot swapping capability 4 USB 3.0 type A female connectors, Supports external power socket in order to supplying power for each USB 3.0.