: with this USB hub, you can make it instantly add 7 USB 3.0 high-speed port extensions that connect multi usb port devices to your computer or laptop at the same time.For example: keyboard, mouse, card reader, earphone, etc.Extensive compatibility,USB data transmission speed up to 5gbps, can transmit a high-definition movie in a few seconds.Backwards compatible with USB 2.0devices. : Each port on the USB 3.0 hub has its own power switch, Each port has a separate indicator lightso you can turn on/off devices when they're not in use and each individual USB port is independently controlled and not affect each other.