How to reset linksys sps224g4 switch?

Question

network hardware

Hello, I inherited 3 Linksys sps224g4 switches, there is no data about them. Those. neither the control port nor the assigned IP addresses are known, nothing. There is a console cable (on the switch is a console port ala COM, or rather DB9 mom), and on the other end is rj-45. I tried to poke with the console - the connection is not fixed anywhere (maybe I'm a fool and doing something wrong, before that, the switches had rj-45 consoles all the time). Can't find a reset button either. What can be done to get rid of them?

Answer 1

https://superuser.com/questions/1237778/linksys-ci...
The version is different, but suddenly it will work