diff --git a/app/modules/floor_infrastructure/edit.php b/app/modules/floor_infrastructure/edit.php
index 7f81936..ce42205 100644
--- a/app/modules/floor_infrastructure/edit.php
+++ b/app/modules/floor_infrastructure/edit.php
@@ -45,6 +45,20 @@ if ($type === 'outlet' && $id > 0) {
         $pageTitle = "Wandbuchse bearbeiten: " . htmlspecialchars($outlet['name']);
     }
 }
+
+$panel = $panel ?? [];
+$outlet = $outlet ?? [];
+
+$defaultPanelSize = ['width' => 140, 'height' => 40];
+$defaultOutletSize = 32;
+
+if ($type === 'patchpanel') {
+    $panel['width'] = $panel['width'] ?? $defaultPanelSize['width'];
+    $panel['height'] = $panel['height'] ?? $defaultPanelSize['height'];
+}
+
+$markerWidth = $type === 'patchpanel' ? $panel['width'] : $defaultOutletSize;
+$markerHeight = $type === 'patchpanel' ? $panel['height'] : $defaultOutletSize;
 ?>
 
 <div class="floor-infra-edit">
@@ -83,11 +97,28 @@ if ($type === 'outlet' && $id > 0) {
                 </div>
                 <div class="form-group">
                     <label>Breite</label>
-                    <input type="number" name="width" value="<?php echo $panel['width'] ?? 0; ?>" required>
+                    <input type="number" name="width" value="<?php echo $panel['width']; ?>" required readonly title="Breite wird automatisch nach Standardwerten vorgegeben.">
                 </div>
                 <div class="form-group">
                     <label>Höhe</label>
-                    <input type="number" name="height" value="<?php echo $panel['height'] ?? 0; ?>" required>
+                    <input type="number" name="height" value="<?php echo $panel['height']; ?>" required readonly title="Höhe wird automatisch nach Standardwerten vorgegeben.">
+                </div>
+            </div>
+
+            <div class="form-group">
+                <label>Stockwerkskarte</label>
+                <div class="floor-plan-block">
+                    <div id="floor-plan-canvas" class="floor-plan-canvas"
+                         data-marker-width="<?php echo $markerWidth; ?>"
+                         data-marker-height="<?php echo $markerHeight; ?>"
+                         data-marker-type="patchpanel"
+                         data-x-field="pos_x"
+                         data-y-field="pos_y">
+                        <div id="floor-plan-marker" class="floor-plan-marker panel-marker"
+                             style="--marker-width: <?php echo $markerWidth; ?>px; --marker-height: <?php echo $markerHeight; ?>px;"></div>
+                    </div>
+                    <p class="floor-plan-hint">Ziehe das Patchpanel oder klicke auf den Plan, um die Position zu setzen.</p>
+                    <p class="floor-plan-position">Koordinate: <span id="floor-plan-position"></span></p>
                 </div>
             </div>
 
@@ -101,7 +132,7 @@ if ($type === 'outlet' && $id > 0) {
                 <textarea name="comment"><?php echo htmlspecialchars($panel['comment'] ?? ''); ?></textarea>
             </div>
 
-            <p class="info">TODO: Drag & Drop auf dem SVG-Plan erlauben.</p>
+            <p class="info">Position und Größe folgen dem Drag-&-Drop auf dem Plan, damit alle Patchpanels einheitlich bleiben.</p>
 
         <?php else: ?>
             <div class="form-group">
@@ -131,12 +162,29 @@ if ($type === 'outlet' && $id > 0) {
                 <input type="number" name="y" value="<?php echo $outlet['y'] ?? 0; ?>">
             </div>
 
+            <div class="form-group">
+                <label>Stockwerkskarte</label>
+                <div class="floor-plan-block">
+                    <div id="floor-plan-canvas" class="floor-plan-canvas"
+                         data-marker-width="<?php echo $markerWidth; ?>"
+                         data-marker-height="<?php echo $markerHeight; ?>"
+                         data-marker-type="outlet"
+                         data-x-field="x"
+                         data-y-field="y">
+                        <div id="floor-plan-marker" class="floor-plan-marker outlet-marker"
+                             style="--marker-width: <?php echo $markerWidth; ?>px; --marker-height: <?php echo $markerHeight; ?>px;"></div>
+                    </div>
+                    <p class="floor-plan-hint">Klicke oder ziehe die Wandbuchse auf dem Plan. Die Größe bleibt quadratisch.</p>
+                    <p class="floor-plan-position">Koordinate: <span id="floor-plan-position"></span></p>
+                </div>
+            </div>
+
             <div class="form-group">
                 <label>Kommentar</label>
                 <textarea name="comment"><?php echo htmlspecialchars($outlet['comment'] ?? ''); ?></textarea>
             </div>
 
-            <p class="info">TODO: Wandbuchsen gezielt auf dem Stockwerksplan platzieren.</p>
+            <p class="info">Wandbuchsen bleiben quadratisch, ihre Position wird über die Karte festgelegt.</p>
         <?php endif; ?>
 
         <div class="form-actions">
@@ -178,4 +226,158 @@ if ($type === 'outlet' && $id > 0) {
     font-size: 0.9em;
     color: #555;
 }
+.floor-plan-block {
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+}
+.floor-plan-canvas {
+    position: relative;
+    width: 100%;
+    min-height: 260px;
+    border: 1px solid #d4d4d4;
+    border-radius: 8px;
+    background-color: #fff;
+    background-image:
+        linear-gradient(90deg, rgba(0, 0, 0, 0.05) 1px, transparent 1px),
+        linear-gradient(rgba(0, 0, 0, 0.05) 1px, transparent 1px);
+    background-size: 40px 40px;
+    cursor: crosshair;
+    overflow: hidden;
+}
+.floor-plan-marker {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: var(--marker-width, 32px);
+    height: var(--marker-height, 32px);
+    transition: left 0.1s ease, top 0.1s ease;
+    touch-action: none;
+}
+.floor-plan-marker.panel-marker {
+    background: rgba(13, 110, 253, 0.25);
+    border: 2px solid #0d6efd;
+    border-radius: 6px;
+}
+.floor-plan-marker.outlet-marker {
+    background: rgba(25, 135, 84, 0.25);
+    border: 2px solid #198754;
+    border-radius: 4px;
+}
+.floor-plan-hint {
+    font-size: 0.85em;
+    color: #444;
+    margin: 0;
+}
+.floor-plan-position {
+    margin: 0;
+    font-size: 0.85em;
+    color: #666;
+}
 </style>
+
+<script>
+document.addEventListener('DOMContentLoaded', () => {
+    const canvas = document.getElementById('floor-plan-canvas');
+    const marker = document.getElementById('floor-plan-marker');
+    const positionLabel = document.getElementById('floor-plan-position');
+    if (!canvas || !marker) {
+        return;
+    }
+
+    const xFieldName = canvas.dataset.xField;
+    const yFieldName = canvas.dataset.yField;
+    const xField = xFieldName ? document.querySelector(`input[name="${xFieldName}"]`) : null;
+    const yField = yFieldName ? document.querySelector(`input[name="${yFieldName}"]`) : null;
+    if (!xField || !yField) {
+        return;
+    }
+
+    const markerWidth = Math.max(1, Number(canvas.dataset.markerWidth) || marker.offsetWidth);
+    const markerHeight = Math.max(1, Number(canvas.dataset.markerHeight) || marker.offsetHeight);
+
+    const clamp = (value, min, max) => Math.min(max, Math.max(min, value));
+
+    const updatePositionLabel = (x, y) => {
+        if (positionLabel) {
+            positionLabel.textContent = `${Math.round(x)} x ${Math.round(y)}`;
+        }
+    };
+
+    const setMarkerPosition = (rawX, rawY) => {
+        const rect = canvas.getBoundingClientRect();
+        const maxX = Math.max(0, rect.width - markerWidth);
+        const maxY = Math.max(0, rect.height - markerHeight);
+        const left = clamp(rawX, 0, maxX);
+        const top = clamp(rawY, 0, maxY);
+        marker.style.left = `${left}px`;
+        marker.style.top = `${top}px`;
+        xField.value = Math.round(left);
+        yField.value = Math.round(top);
+        updatePositionLabel(left, top);
+    };
+
+    const updateFromInputs = () => {
+        setMarkerPosition(Number(xField.value) || 0, Number(yField.value) || 0);
+    };
+
+    updateFromInputs();
+
+    let dragging = false;
+    let offsetX = 0;
+    let offsetY = 0;
+
+    const startDrag = (clientX, clientY) => {
+        const markerRect = marker.getBoundingClientRect();
+        offsetX = clientX - markerRect.left;
+        offsetY = clientY - markerRect.top;
+    };
+
+    marker.addEventListener('pointerdown', (event) => {
+        event.preventDefault();
+        dragging = true;
+        startDrag(event.clientX, event.clientY);
+        marker.setPointerCapture(event.pointerId);
+    });
+
+    marker.addEventListener('pointermove', (event) => {
+        if (!dragging) {
+            return;
+        }
+        const rect = canvas.getBoundingClientRect();
+        setMarkerPosition(event.clientX - rect.left - offsetX, event.clientY - rect.top - offsetY);
+    });
+
+    const stopDrag = (event) => {
+        if (!dragging) {
+            return;
+        }
+        dragging = false;
+        if (marker.hasPointerCapture(event.pointerId)) {
+            marker.releasePointerCapture(event.pointerId);
+        }
+    };
+
+    ['pointerup', 'pointercancel', 'pointerleave'].forEach((evt) => {
+        marker.addEventListener(evt, stopDrag);
+    });
+
+    canvas.addEventListener('pointerdown', (event) => {
+        if (event.target !== canvas) {
+            return;
+        }
+        const rect = canvas.getBoundingClientRect();
+        setMarkerPosition(event.clientX - rect.left - markerWidth / 2, event.clientY - rect.top - markerHeight / 2);
+    });
+
+    [xField, yField].forEach((input) => {
+        input.addEventListener('input', () => {
+            updateFromInputs();
+        });
+    });
+
+    window.addEventListener('resize', () => {
+        updateFromInputs();
+    });
+});
+</script>