I have the converter in operation with a Wingo fibre connection. However, I use a router from netgear. With the Swisscom router neutered by Wingo, it is questionable whether it works. I have also purchased a new SFP module. That would be the TL-SM321 B module. The Wingo module is quite difficult to get into the converter and the connections are reversed. A test at my place even showed that I achieve slightly more data throughput with the TP-Link SFP module.