This USB-A hub allows you to connect up to four USB peripherals to your laptop, Ultrabook, Chromebook, PC, tablet or other USB device. You can expand the potential of your device by connecting USB peripherals that can help you do your job faster, easier and better, such as an external hard drive, keyboard/mouse, power meter and printer. All four USB ports transfer data at speeds up to 5 Gbps, which is 10 times faster than USB 2.0. The USB ports are backward compatible with previous USB generations, so you can continue using older peripherals while getting high-speed performance from new devices. The hub connects to your computer via its built-in USB cable, saving you the expense and effort of buying a cable. The four-port hub requires no software, drivers or external power. The slim aluminum case fits easily into a pocket, briefcase or laptop bag for connecting on the go.