So you want to get more done on your MacBook? The PlusDock could be just what you need. It is a versatile expansion dock with 4 x USB 3.0 ports, audio port, Gigabit LAN, 10000 mAh battery, and a charging port for your smartphones and tablets. It has a full aluminum case and serves as a stand for your MacBook.
The PlusDock is compatible with MacBook Air 13″ and MacBook Pro Retina 13/15″ laptops. It offers storage expansion up to 4 TB (1 TB mSATA). More information is available here.