The Sandberg USB 3.0 Pocket Hub allows connection of up to 4 USB devices to your computer. Thus you can for example connect an external hard disk, a printer and a mouse simultaneously. Connect it to a USB port and it will work immediately, without the need to install drivers. Features and Benefits 5 years warranty. Double Quality Control Instant USB 3.0 ports extension. Full freedom of movement. USB 3.0 SuperSpeed 5 Gbit/sec. Specification Length of Guarantte: 60 months.