
I ordered through the market. The amazon consultant said that all questions about the inoperability of the site that sold the goods. But even there they said that not to them, but to the manufacturer. It is necessary to send it to Hong Kong for diagnostics at your own expense, which costs more than the router itself. In general, for me the conclusion is that it is better to overpay a little and buy a reliable tp-link and in which case there will be no problems with the service.

π StarTech.com NETRS2321P: 1-Port RS232 to Ethernet IP Converter, Serial over IP Device Server - Black
5 Review

π StarTech.com NETRS232 Serial to IP Ethernet Device Server - DIN Rail Mountable - Serial Device Server - Serial Over IP Device Server (Black)
4 Review

π uni USB C Hub with Ethernet Adapter, 4K HDMI, Gigabit Ethernet, and 3 USB 3.0 Ports for MacBook Pro, iPad Pro, XPS
11 Review

π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review