I'm not sure this is the correct place for this question.
I have a console cable to configure network devices like switches (https://images-na.ssl-images-amazon.com/images/I/41LDstMTA5L.jpg)
So, I want to make an extension cable with an RS232 connector in one side and the other side with a TTL to USB connector, I already have this one https://www.aliexpress.com/item/CH340G-Module-USB-TTL-Serial-Converter-UART-Module-CH340-3-3V-5V-Switch-Upgrade-Download-Brush/32594018417.html
I saw some cables in market but I think those are not long enough to my needs, also I have the cable and just have to buy the connectors and I really want to make the cable.
My issue is that I don't know the proper connections I have to do between the connectors, I searched in google but I don't see configurations of the USB to TTL adapter with RS232 connector.