Synchronizing Data and Supporting Replication - Mastering phpMyAdmin 3.4 for Effective MySQL Management - page 227

For both the source and target databases, we can select the server location. By
default, the selector is placed on Enter manually and we can enter its hostname,
port, socket name, username, password, and database name. In most cases, the port
should be left to the default 3306 and the socket name should be left empty. Notice
that we are currently connected to a MySQL server (via the normal login panel) and
this panel could permit us to connect to two more servers.
Another choice for server location is Current connection . This refers to the server
on which we are connected for normal phpMyAdmin operations; its name is
displayed at the top of the main panel. Should we choose this, a JavaScript-enabled
browser hides all choices except for the database name (connection credentials are
unnecessary in this situation) and a selector becomes available, showing all of the
databases to which we have access.