I have bought 2 of these cables according to you.

Lets hope they will deliver.  👍

That's a lot of pressure! I'm confident you will find the improvements to your liking. Give the cable100hrs before you draw conclusions. You will, however, notice some niceties out of the box. I'll be interested to hear your impressions.

I believe I misspoke when I suggested 100hrs break-in for the Melco C1’s. Instead, I must’ve been thinking of the Network Acoustics Muon Pro Streaming Cable & Muon Pro Ethernet Filter, which by the way, adds unmistakable improvements to my streaming system. I’m talking about a more natural, relaxed, fatigue-free sound without sacrificing detail. In addition to the ocopper > fiber > copper conversion between the router & Synergistic Research Ethernet Switch! 

I learned in a You Tube video , by a reviewer , that the Moun Pro , filters noise at 1000mbps.

Whitch is rather rare .  Usually , speed is noise . 100mbps ethernet filters is the norm . Muon Pro is a very highend filter.

@jmfinney

On ´´ AudioShark ´´ thread : Question and answer. Juilly 22 2024

’´Can the melco c1d20-sfp-a direct connection cable be used with the L2?´´

´´No, that cable is SFP+ which no LUMIN devices support.´´

https://www.audioshark.org/threads/lumin-l2-music-library-and-network-switch.21967/page-3#post-370368

I hope my 2 ordered Melco cables can be used with my Lumin L2 and Lumin X1

Well, I'm not familiar enough with your Lumin so I'm unable say if the C1 Direct Attach is compatible. If not, simply return it. I can't imagine any reputable business not offering a generous trial period & return policy. 

@jmfinney

Well ,  you sent me a PM saying : ´´ Does your switch have an SFP cage? You may find the Melco C1-D20 SFP+ Direct Attach cable to your Lumin works even better. ´´

Remember ??

According to WKLIE , answering me about the cable and Lumin  a few minutes ago : 

´´ It likely won’t work. In case it works for you, please let me know.´´

Thanks for your expertise .....