diff --git a/src/App.js b/src/App.js
index d3eb4d2a..30423027 100644
--- a/src/App.js
+++ b/src/App.js
@@ -85,25 +85,36 @@ class App extends React.Component {
 
     this.midi = midi;
 
+    var es9Inputs = [];
+    var es9Outputs = [];
+
     midi.inputs.forEach(function(value, key, map) {
       if (value.name === this.es9InputName) {
-        this.es9.input = value;
-        return;
+        es9Inputs.push(value);
       }
     }.bind(this));
     midi.outputs.forEach(function(value, key, map) {
       if (value.name === this.es9OutputName) {
-        this.es9.output = value;
-        return;
+        es9Outputs.push(value);
       }
     }.bind(this));
 
-    if ([this.es9.input, this.es9.output].includes(undefined)) {
-      this.setState({
-        midiSupport: false,
-        statusMessage: 'ES-9 not found'
-      });
-      return;
+    switch (true) {
+      case es9Inputs.length === 0 || es9Outputs.length === 0:
+        this.setState({
+          midiSupport: false,
+          statusMessage: 'ES-9 not detected'
+        });
+        return;
+      case es9Inputs.length > 1 || es9Outputs.length > 1:
+        this.setState({
+          midiSupport: false,
+          statusMessage: 'Multiple ES-9s detected'
+        });
+        return
+      default:
+        this.es9.input = es9Inputs[0];
+        this.es9.output = es9Outputs[0];
     }
 
     this.setState({
diff --git a/src/Status.js b/src/Status.js
index f583d7de..eb82f538 100644
--- a/src/Status.js
+++ b/src/Status.js
@@ -66,10 +66,10 @@ class Status extends React.Component {
     var inputs = [];
     var outputs = [];
     this.props.midi?.inputs.forEach(function(value, key, map) {
-      inputs.push(<MenuItem key={value.id} value={value.name}>{value.name}</MenuItem>);
+      inputs.push(<MenuItem key={value.id} value={value.name}>{value.name} ({value.id})</MenuItem>);
     });
     this.props.midi?.outputs.forEach(function(value, key, map) {
-      outputs.push(<MenuItem key={value.id} value={value.name}>{value.name}</MenuItem>);
+      outputs.push(<MenuItem key={value.id} value={value.name}>{value.name} ({value.id})</MenuItem>);
     });
 
     return (
@@ -81,12 +81,12 @@ class Status extends React.Component {
           inputs.length > 0 &&
           outputs.length > 0 &&
           <>
-            <p>Your ES-9 may be named differently than expected.</p>
             <p>Select your ES-9 input and output below.</p>
             <FormControl sx={{ m: 1, minWidth: 200 }}>
               <InputLabel id="input-label">Select MIDI Input</InputLabel>
               <Select
                 labelId="input-label"
+                label="Select MIDI Input"
                 value={this.state?.input}
                 onChange={this.setInput.bind(this)}
               >{inputs}</Select>
@@ -96,6 +96,7 @@ class Status extends React.Component {
               <InputLabel id="ouput-label">Select MIDI Output</InputLabel>
               <Select
                 labelId="output-label"
+                label="Select MIDI Output"
                 value={this.state?.output}
                 onChange={this.setOutput.bind(this)}
               >{outputs}</Select>