Charging query "120v/240v/400v"

[kzone]

Hi I bought a late 2014 Mercedes B EV in Los Angeles, CA. This was available in mid 2015. I am the first owner and I have a quick question. On the door of the charging tank it says 120v/240v/400v. Does that mean it is equipped for quick charging process? I am confused. Also, I read a post in this forum regarding installation of CHAdeMO port called JDEMO for B CLASS. Is this possible ? can i go to a dealer and have it installed? Appreciate your time.