w3m specify http port

When using w3m terminal browser, how can I specify the http/s port that I want to use when connecting to a web server. There does not seem to be a -p option to use non-standard ports (80 & 443). The colon syntax, localhost:8080 does not work either. Anyone know how to do this? Seems like I have been able to specify the port in addition to the host on w3m before.