My Setup:
roon server - tplink 1gbps (LPS) - tplink switch with optical connection modules - tplink 1gbps (hdplex LPS) - cat6 cabling - switch 5v (UpToneLPS-1) - optoisolator 100mbps (UpTone LPS-1) - bridge 2
Nas and Roon server are in different location that DS dac