diff --git a/apps/desktop/resources/web/index.html b/apps/desktop/resources/web/index.html
index 4805d33..4f664a2 100644
--- a/apps/desktop/resources/web/index.html
+++ b/apps/desktop/resources/web/index.html
@@ -197,6 +197,7 @@
     <div class="toolbar">
       <h2>Devices</h2>
       <button class="btn btn-primary" id="btn-discover" onclick="discoverDevices()">⟳ Scan</button>
+      <button class="btn btn-secondary btn-sm" id="btn-manual-add" onclick="openManualModal()" title="Add device manually" style="width:auto;padding:9px 12px;">＋</button>
     </div>
     <div id="page-header-devices" class="page-header">
       <span class="ws-dot" id="ws-dot-d"></span>
@@ -436,6 +437,29 @@
   </div>
 </div>
 
+<!-- ── Manual Add Modal ── -->
+<div class="modal-backdrop" id="modal-manual" onclick="closeManualModal(event)">
+  <div class="modal" onclick="event.stopPropagation()">
+    <div class="modal-header">
+      <span class="modal-title">Add Device Manually</span>
+      <button class="modal-close" onclick="closeManualModal()">✕</button>
+    </div>
+    <div class="form-group">
+      <label class="form-label">IP Address</label>
+      <input class="form-input" id="f-manual-host" type="text" placeholder="192.168.1.100" autofocus />
+    </div>
+    <div class="form-group">
+      <label class="form-label">Port</label>
+      <input class="form-input" id="f-manual-port" type="number" placeholder="49153" value="49153" />
+    </div>
+    <div id="modal-manual-error" style="display:none;color:var(--danger);font-size:13px;margin-bottom:10px;"></div>
+    <div class="modal-footer">
+      <button class="btn btn-ghost" onclick="closeManualModal()">Cancel</button>
+      <button class="btn btn-primary" id="btn-add-manual" onclick="addManualDevice()">Add</button>
+    </div>
+  </div>
+</div>
+
 <!-- ── Delete Confirm ── -->
 <div class="confirm-backdrop" id="confirm-delete">
   <div class="confirm-box">
@@ -603,6 +627,67 @@ async function toggleDevice(i, e) {
   }
 }
 
+// ── Manual Add ─────────────────────────────────────────────────────────────
+function openManualModal() {
+  document.getElementById('f-manual-host').value = '';
+  document.getElementById('f-manual-port').value = '49153';
+  document.getElementById('modal-manual-error').style.display = 'none';
+  document.getElementById('modal-manual').classList.add('open');
+  setTimeout(() => document.getElementById('f-manual-host').focus(), 100);
+}
+
+function closeManualModal(e) {
+  if (e && e.target !== document.getElementById('modal-manual')) return;
+  document.getElementById('modal-manual').classList.remove('open');
+}
+
+async function addManualDevice() {
+  const errEl = document.getElementById('modal-manual-error');
+  errEl.style.display = 'none';
+
+  const host = document.getElementById('f-manual-host').value.trim();
+  const port = parseInt(document.getElementById('f-manual-port').value, 10) || 49153;
+
+  if (!host) {
+    errEl.textContent = '⚠ Enter an IP address';
+    errEl.style.display = 'block';
+    return;
+  }
+
+  const btn = document.getElementById('btn-add-manual');
+  btn.disabled = true; btn.textContent = 'Adding…';
+
+  try {
+    const result = await api('POST', '/api/devices/discover', {
+      manualEntries: [{ host, port }]
+    });
+    
+    if (!result || result.length === 0) {
+      errEl.textContent = '⚠ No device found at that address';
+      errEl.style.display = 'block';
+      btn.disabled = false; btn.textContent = 'Add';
+      return;
+    }
+
+    const device = result.find((d) => d.host === host);
+    if (device) {
+      const friendlyName = device.friendlyName || device.name || host;
+      toast(`Added ${friendlyName}`, 'success');
+      devices = result;
+      renderDevices();
+      closeManualModal();
+    } else {
+      errEl.textContent = '⚠ Device added but not found in results';
+      errEl.style.display = 'block';
+    }
+  } catch (err) {
+    errEl.textContent = `⚠ ${err.message}`;
+    errEl.style.display = 'block';
+  } finally {
+    btn.disabled = false; btn.textContent = 'Add';
+  }
+}
+
 // ── Rules list ─────────────────────────────────────────────────────────────
 async function loadRules() {
   try {
diff --git a/docker/server.js b/docker/server.js
index a360b5a..567292b 100644
--- a/docker/server.js
+++ b/docker/server.js
@@ -94,6 +94,10 @@ async function handleRequest(req, res) {
     if (url === '/api/devices/discover' && method === 'POST') {
       const saved  = store.getDevices();
       const manual = saved.map((d) => ({ host: d.host, port: d.port }));
+      // Add any manual entries from the request body
+      if (body.manualEntries && Array.isArray(body.manualEntries)) {
+        manual.push(...body.manualEntries);
+      }
       const devs   = await wemo.discoverDevices(8000, manual);
       store.saveDevices(devs);
       return json(res, devs);