What's the Difference Between USB 3.0 and USB 2.0 Ports on a Hub?
On this 4-port hub, one port is USB 3.0 (faster, for drives needing speed) and three are USB 2.0 (fine for a mouse, keyboard, or receiver). Put your fastest device on the 3.0 port and slower peripherals on the rest.
The practical difference is which device you put where.
Match the device to the port
On this 4-port hub, the single USB 3.0 port is the faster one, best kept for an external drive that benefits from speed. The three USB 2.0 ports are well suited to a mouse, keyboard, or wireless receiver, which don't need high throughput. Assigning devices this way gets the most from the hub. /products/usb-hub
A note on running drives
There's one high-speed USB 3.0 port rather than several, so if you regularly run more than one fast drive at once, plan around that single fast port.