The DiSEqC switch will enable the user to select one LNB signal between 2 different LNBs of any type.
 

The 2 input ports marked SAT1 and SAT2 are connected to the 2 LNBs, which may be on 2 different dishes, and the output marked OUT is connected to the receiver.

The selection of the LNBs is done by choosing the appropriate Tone Burst A or B in the menu of the receiver.