To connect up to 4 USB (Universal Serial Bus) devices (e.g. mouse, keyboard, printer, USB (Universal Serial Bus) memory stick) to a USB (Universal Serial Bus) port. Additional USB (Universal Serial Bus)-C adapter for devices with USB (Universal Serial Bus)-C interface (e.g. for Macbook 12"). Bus-powered, i.e. voltage supply comes from the USB (Universal Serial Bus) socket on the device. Integrated USB (Universal Serial Bus) cable for connection to the PC / notebook / tablet. Suitable & tested for USB (Universal Serial Bus) 3.1 Gen 1, but also works with USB (Universal Serial Bus) 3.0 & USB (Universal Serial Bus) 2.0 devices.