- To connect up to 4 USB devices (e.g. mouse, keyboard, printer, USB memory stick) to a USB port ,- Great distance between sockets makes it easier to plug in wider USB plugs/dongles ,- Compact size for travelling, ideal for on the go ,- Bus-powered, i.e. voltage supply comes from the USB socket on the PC/notebook ,- Integrated USB cable for connection to the PC / notebook ,- Suitable and tested for USB 2.0, backwards compatible with USB 1.1 , ,System Requirements: ,- Operating system: Windows 10/8/7/Vista/XP and Mac OS 10.x - Connection: USB-A Plug ,- Connection Cable: Integrated ,- Number of USB Ports: 4 Ports ,- USB Standard: USB 2.0 ,- Model: Bus Powered ,- OTG Capable: No ,- Colour: Black 2 years legal warranty only