2-3 Questions on 5 port switch ethernet switch box.
1.  Does the 5 port switch draw power?  Or is the power only on when a head unit is powered up?
2.  There are 2 versions of the ethernet 5 port switch box.  One can be updated?  Evidently there's a 2nd version, which I don't have the model# of (AS ETH 5PXG???).  What is updateable that would be beneficial?
  
I currently have 1198, 798ci Hd SI, an 1198 external gps receiver, 2 transducers, and I'm at version 6.74 software.
Thanks,
Brian