
A USB 3.0 hub acts very much like a port replicator to a laptop. It allows you to have multiple devices connected at once, far more than the number of ports provided on the laptop. In fact, some ultrabook models now offer only one or two USB ports, making a hub even more useful.
I’ve recently found another factor influencing my use of a USB 3.0 hub; my new Rebel Desk
Further, a really well-considered USB 3.0 hub has the juice to charge multiple, high-current devices. That means charging a several tablets and cell phones at the same time. The fact that the hub also connects to the computer makes the devices available to the computer, which is not the case when using the two USB charging ports built into the Rebel Desk power module.
My choice in this regard, ordered just recently, was an Anker 7-port USB 3.0 hub that’s capable of delivering 1.5 A to each port, up to 10 A in total. The ability to deliver so much current to all the ports implies that the hub has it’s own power supply, not unlike a small laptop AC adapter. I choose this model on the basis of the ports being physically located along the side of the device. This potentially allows me to mount it to the underside of my deck using some sticky Velcro tape.