diff --git a/src/dashboard/dashboard.js b/src/dashboard/dashboard.js
index 2d1aa75..ee838f3 100644
--- a/src/dashboard/dashboard.js
+++ b/src/dashboard/dashboard.js
@@ -186,11 +186,22 @@ class Dashboard extends Component {
   componentDidUpdate(prevProps: Readonly<P>, prevState: Readonly<S>, snapshot: SS) {
     // open web sockets if ICs are already known and sockets are not opened yet
     if (this.state.ics !== undefined && !Dashboard.webSocketsOpened) {
-      if (this.state.ics.length > 0) {
-        console.log("Starting to open IC websockets:", this.state.ics);
+    // only open sockets of ICs with configured input or output signals
+    let relevantICs = this.state.ics.filter(ic => {
+      let result = false;
+      this.state.configs.forEach(config => {
+        if(ic.id === config.icID && (config.inputLength !== 0 || config.outputLength !== 0)){
+          result = true;
+        }
+      })
+      return result;
+    })
+    
+      if (relevantICs.length > 0) {
+        console.log("Starting to open IC websockets:", relevantICs);
         AppDispatcher.dispatch({
           type: 'ics/open-sockets',
-          data: this.state.ics
+          data: relevantICs
         });
 
         Dashboard.webSocketsOpened = true;