ETHERNET TO FIBEROPTIC

https://www.theabsolutesound.com/articles/how-to-optimize-digital-streaming-with-optical-fiber/

I am not sure if you want to physically convert the Innuos because it voids warranty.  Just follow the recommendations from The Absolute Sound.  The only thing I will consider adding onto the list is the quality LPS (voltage varies) or SMPS such as Ifi iPower 2/x for FMCs.  

Check out my setup….short ethernet from router to conversion box the fiber to another box Ethernet connected to my Dac.i did this for lightning protection but I’m getting a much clearer spacious sound,YMMV 

https://www.smallgreencomputer.com/products/signature-isolation-bundle-1?srsltid=AfmBOorg_Jb6LVsBBpxpVU6s4v1ctLZH7XpqawjVdIUB8b3J1EyMP4xh

no affiliation though i have been a happy customer

lhy also makes similar setups

+1 for Small Green Computer.  Also a happy long term customer.  I would not heistate to reach out to Andrrew Gillis, owner, andrew@smallgreencomputer.com

He is very willing to share his experiences and make suggestions and recommendations.