Share Experiences with Ethernet Switches, Ethernet Cables and USB Cables used in Streaming

Presently I have a respectable all digital system that performs well and would like to add a server / streamer but don't have a lot of knowledge and experience with the titled items. 

Our system is all digital and includes a Meridian 861v8, a Meridian Ultra DAC, Pass XA200.5 mono's, Sasha I speakers, high end MIT Oracle and CH Acoustic cables, Sound Application TT-7 power conditioner. I stated this so the level of our system is identified. 

In addition to the server / streamer itself, the Ethernet cable, Ethernet Switch and the USB cable are things to consider.

Can others share their experience with these items?