diff --git a/partials/landingpages/modules/setup.php b/partials/landingpages/modules/setup.php
index 51cd452..d32212b 100644
--- a/partials/landingpages/modules/setup.php
+++ b/partials/landingpages/modules/setup.php
@@ -59,6 +59,24 @@ $getNested = function (array $source, string $path): mixed {
     return $node;
 };
 
+$dbGroups = [];
+foreach ($fields as $field) {
+    $name = (string)($field['name'] ?? '');
+    if (!str_contains($name, '.')) {
+        continue;
+    }
+
+    [$group, $key] = explode('.', $name, 2);
+    if ($key !== 'driver') {
+        continue;
+    }
+
+    $label = (string)($field['label'] ?? $group);
+    $label = trim(preg_replace('/\s+DB\s+Driver$/i', ' DB', $label) ?? $label);
+    $label = $label !== '' ? $label : $group;
+    $dbGroups[$group] = $label;
+}
+
 if ($_SERVER['REQUEST_METHOD'] === 'POST') {
     $payload = [];
 
@@ -92,10 +110,36 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         $payload[$name] = $value;
     }
 
-    modules()->saveSettings($moduleName, $payload);
-    $notice = 'Setup gespeichert.';
     $current = array_replace_recursive($current, $payload);
-    $module = modules()->get($moduleName) ?: $module;
+
+    $testGroup = (string)($_POST['test_db'] ?? '');
+    if ($testGroup !== '') {
+        if (!array_key_exists($testGroup, $dbGroups)) {
+            $error = 'Unbekannte Datenbank-Konfiguration.';
+        } else {
+            $dbConfig = $getNested($current, $testGroup);
+            if (!is_array($dbConfig)) {
+                $error = 'Datenbank-Konfiguration ist unvollstaendig.';
+            } else {
+                try {
+                    $dbConfig['options'] = array_replace([
+                        \PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION,
+                        \PDO::ATTR_DEFAULT_FETCH_MODE => \PDO::FETCH_ASSOC,
+                    ], (array)($dbConfig['options'] ?? []));
+
+                    $testPdo = \App\Database::createFromArray($dbConfig);
+                    $testPdo->query('SELECT 1')->fetchColumn();
+                    $notice = $dbGroups[$testGroup] . ': Verbindung erfolgreich.';
+                } catch (\Throwable $e) {
+                    $error = $dbGroups[$testGroup] . ': Verbindung fehlgeschlagen. ' . $e->getMessage();
+                }
+            }
+        }
+    } else {
+        modules()->saveSettings($moduleName, $payload);
+        $notice = 'Setup gespeichert.';
+        $module = modules()->get($moduleName) ?: $module;
+    }
 }
 ?>
 <div class="card">
@@ -147,6 +191,20 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
       </label>
     <?php endforeach; ?>
 
+    <?php if ($dbGroups !== []): ?>
+      <div class="card" style="padding:14px; background:var(--panel-2); display:grid; gap:10px;">
+        <strong>Datenbankverbindungen testen</strong>
+        <small class="muted">Der Test nutzt die aktuell eingetragenen Werte aus diesem Formular und speichert sie nicht.</small>
+        <div style="display:flex; gap:10px; flex-wrap:wrap;">
+          <?php foreach ($dbGroups as $group => $label): ?>
+            <button class="nav-link" type="submit" name="test_db" value="<?= e($group) ?>" formnovalidate>
+              <?= e($label) ?> testen
+            </button>
+          <?php endforeach; ?>
+        </div>
+      </div>
+    <?php endif; ?>
+
     <div style="display:flex; gap:10px;">
       <button class="cta-button" type="submit">Speichern</button>
       <a class="nav-link" href="/modules/access/<?= e($moduleName) ?>">Zugriff verwalten</a>