Do USB to Ethernet adapters work well? It may be worth considering if you are a gamer or you need a stronger connection. Here ...

A simple converter can be sourced online, but the only thing he could find locally that was even close was a USB to RS-232 converter. He used that component to craft his own USB to RS-485 bridge.

The serial port is most commonly RS232 ... to note about USB to serial adapters is that not all of them are the same. They can vary in terms of supported baud rates, cable types, duplexing ...