Per gestire più di un server MySql, occorre intervenire sul file config.inc.php sotto la home di installazone di PhpMyAdmin:

/*
 * Servers configuration
 */
$i = 0;
 
/*
 * First server
 */
$i++;
 
/* Authentication type and info */
$cfg['Servers'][$i]['auth_type']        = 'config';
$cfg['Servers'][$i]['user']             = '{username}';
$cfg['Servers'][$i]['password']         = '{password}';
$cfg['Servers'][$i]['AllowNoPassword']  = true;
 
/* Server parameters */
$cfg['Servers'][$i]['host']             = '{servername}';
$cfg['Servers'][$i]['connect_type']     = 'tcp';
$cfg['Servers'][$i]['compress']         = false;
 
/* Select mysqli if your server has it */
$cfg['Servers'][$i]['extension'] = 'mysqli';
 
/* User for advanced features */
$cfg['Servers'][$i]['controluser'] = 'pma';
$cfg['Servers'][$i]['controlpass'] = '';
 
/* Advanced phpMyAdmin features */
$cfg['Servers'][$i]['pmadb']            = 'phpmyadmin';
$cfg['Servers'][$i]['bookmarktable']    = 'pma_bookmark';
$cfg['Servers'][$i]['relation']         = 'pma_relation';
$cfg['Servers'][$i]['table_info']       = 'pma_table_info';
$cfg['Servers'][$i]['table_coords']     = 'pma_table_coords';
$cfg['Servers'][$i]['pdf_pages']        = 'pma_pdf_pages';
$cfg['Servers'][$i]['column_info']      = 'pma_column_info';
$cfg['Servers'][$i]['history']          = 'pma_history';
$cfg['Servers'][$i]['designer_coords']  = 'pma_designer_coords';
 
Now go on adding the second, third, forth server..

Don't forget to add $i++ before starting configuration of a new server:

/*
 * Second server
 */
$i++;
...
...