It is unlikely then that you could take a modern USB-only device and an unholy chain of USB-to-PS/2-to-serial adapters, and have it work as a serial mouse. Want to run Windows 3.1 on a 386DX?
This is the firmware for a device that can communicate (bi-directional) to an RS232 device over Wi-Fi using a ESP8266 Node MCU 12E device and a NulSom Inc. Ultra Compact RS232 to TTL Converter with ...