Keep in mind that dedicated and semi-dedicated proxies support SOCKS. You cannot use SOCKS with username/password authorization. You may use SOCKS protocol with IP authorization.
1.) Access your Dashboard
2.) Select Via IP authorization
A.) Then select SOCKS on the right hand side
3.) Authorize your IP. If you do not know how to authorize your IP you may simply follow this video guide here https://www.youtube.com/watch?v=Q-NSzU1GDp8
A.) SOCKS uses port 1080