Enjoy up to a 5 Gbps data transfer rate that is 10x faster than regular USB 2.0, making your file transfer quicker. All 4 ports work simultaneously, making it perfect for any busy home or office. The 3.0 Hub intelligently divides the power across the USB ports, hence allowing you to use 4 External HDD without any power supply at the same time. You can also connect an external micro USB power source to juice up more power.