Connect to non-standard MySQL port using dbExpress

Hello,

when trying to connect to a non-standard MySQL port, e.g. 3307, using
dbExpress then the connection fails. I tried to set up the "server
port" parameter in TSQLConnection.Params, but this is ignored, it
seems. Does anybody know a way to tell dbExpress a port number?
Environment is D7Prof.

Thanks - Mike