ADODB check if MySQL connected

<?php
include ('classes/adodb.inc.php');
$dbdriver = 'mysqli';
$server = 'localhost';
$user = 'root';
$password = 'testpass';
$database = 'dbname';
$conn = ADONewConnection($dbdriver);
$conn->Connect($server, $user, $password, $database);
if (!$conn->isConnected()):
  echo 'No Connected';
  die();
else:
  echo 'Connected';
endif;
?>