you can facus on these product:
Xian Lai Rhine Z1 Plus music server and Melco N100 music server.
These music server has made significant improvements on the original excellent performance, not only as an excellent Roon Core, but also providing an excellent music management and playback solution. It may be suitable for users who pursue high-quality music playback and management.
Server usually Use with wlan hardware.You can get some commiuncation device from this web. Baudcom https://www.baudcom.com.cn
or e1-converter https://www.e1-converter.com