Ethernet Switch

A Netgear 8-Port Switch is just fine. All the switchgear upstream to the streaming source is of no better quality, it's just built to support hundreds, if not thousands of connections, and with extensive - and expensive - network management capabilities you will never need. I spent the better part of my professional career designing local and wide area networks for some of the largest companies and telecommunications providers in the world. Believe me when I tell you they laugh at the idea of 'audiophile' grade Ethernet. Ethernet itself and the associated software protocol suites are designed from the ground up to be resilient and highly resistant to environmental noise. Streaming audio and even streaming 4K video are considered very light loads on modern networks. Ethernet jitter - the variation in packet arrival times - are 100% mitigated by the packet buffers. If there's even a 1-bit error, the entire packet is retransmitted and reassembled in milliseconds, automatically and transparently to the users. 

Netgear will be just fine. But…can you use one of the router outputs to drive the signal to your audio room and just use switch for all other stuff? If so, it’ll be worth trying. 

Noise from a poor switch is not your friend. Get a good switch and a good filter like one from Network Acoustics.