Does exactly what it states. Great, reasonably priced USB 3.0 device. It expands my USB usage, but remember your initial connection also needs to be 3.0, otherwise the speed is limited to whatever is being provided by the port. Most recently older PCs are still on USB 2.0 standard. I may buy one of these, again, for a friend.
This hub is lightweight and compact. You can tuck into a pocket in your laptop bag or carry-on, which makes it easy for you to use USB devices anywhere when you use your laptop. This hub includes 4 downstream and 1 upstream ports, compliant with universal serial bus 3.0 specification. Hot-swapping feature allows you to connect/disconnect devices without powering down the system.