The two different SunVolts ship with the following configuration:

SunVolt Standard:  The SunVolt Standard has one or two charging ports.  Off the circuit is a single port, however, in the bag with the USB tips, there is a small "line sharer" which can split the one port into two allowing you to charge two devices simultaneously.

SunVolt MAX:  The SunVolt MAX can have one, two or three charging ports.  Off the circuit is a single port which has a splitter pre-installed to make two charging ports (longer cables).  In addition, in the bag with the USB tips, there is a small "line sharer" which can split the one of the two ports into two allowing you to charge up to three devices simultaneously.

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