Mention to disconnect PoE before connecting it for installation

Author: balloob

src/pages/zwa2-install-poe.ts

@@ -13,14 +13,6 @@ export class Zwa2InstallPoEPage extends LitElement {
     }
   `;
 
-  handleInstall() {
-    window.open(
-      'https://home-assistant.github.io/zwa2-toolbox/',
-      '_blank',
-      'noopener,noreferrer'
-    );
-  }
-
   render() {
     const isSerialUnavailable = !('serial' in navigator);
 
@@ -122,6 +114,10 @@ export class Zwa2InstallPoEPage extends LitElement {
               <li>Download backup is at the bottom of the page.</li>
             </ol>
           </li>
+          <li>
+            Make sure the Power-over-Ethernet cable is not connected to the
+            Waveshare board.
+          </li>
           <li>
             Connect the Waveshare board to your computer via USB, click this
             button and follow the instructions to install: