This was the cable I was considering: https://www.amazon.com/USB-Serial-Adapter-Modem-9-pin/dp/B008634VJY/ref=sr_1_3?crid=1P4TPQD71JE7A&keywords=usb%2Bto%2Bnull%2Bmodem&qid=1649563871&sprefix=usb%2Bto%2Bnull%2Bmodem%2Caps%2C203&sr=8-3&th=1