Nothing IMO. Why not use fully qualified cables such as Blue Jeans Cables Cat 5e or Cat 6?
Chord Company music are not proper Ethernet cables, Chord Company has to call them streaming cables.
AQ Vodka just about meet Ethernet standards.
BJC Cat 5e and Cat 6 meet the standards perfectly, not only that, but they test each cable they sell and provide a test certificate.
That said when a controlled test was conducted at the Las Vegas HiFi Show between a $3 non complaint patch lead and AQ Vodka, listeners could not tell them apart.
So me, I’ll continue with my nice looking little HP switch (though I admit a well specified Cisco can sound as good) and Blue Jeans Cables and enjoy the best sound quality I have ever achieved from streaming: almost as good as playing a CD or vinyl record.
However, listen for yourself and decide if you can hear an improvement. I had a hearing test today and happily passed with flying colours, but I still can’t hear any improvement from boutique data cables and different switches. I can’t help it if I’m lucky as Bob Dylan sung.