advanmux-4-enclosure  
AdvanMux-8-110-with-enclosure
  AdvanMux-16-with-enclosure    
advanmux-4
       
advanmux-8-no-enclosure
                 advanmux-16  
AdvanMux-4
4 port multiplexer
  AdvanMux-8
8 port multiplexer
   AdvanMux-16
16 port multiplexer