It has one USB 3.0 port... I suppose you can use whatever you want on that one port, including a docking station or a hub.
Whichever one meets your needs... or am I missing something? I'm using a generic 7-port USB 3.0 docking station on Lenovo convertible, and it provides gigabit networking and audio. It's really handy for the device's primary purpose: playing music and Skype.
Why would it be different than any other USB 3.0 port? The guide says this is a full-size port, not a micro or mini port. The charging port is not USB at all, so you don't have to use a USB OTG connector like on most tablets.
Let us know how you like it. As much as I like the idea, Microsoft's hardware is a bit cost-prohibitive for me.