diff --git a/package.json b/package.json
index 0b11fc8..7669366 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "haritorax-interpreter",
-  "version": "3.0.0",
+  "version": "3.0.1",
   "homepage": "https://github.com/JovannMC/haritorax-interpreter",
   "repository": "https://github.com/JovannMC/haritorax-interpreter",
   "bugs": {
diff --git a/src/mode/com.ts b/src/mode/com.ts
index 4a14cdb..0358108 100644
--- a/src/mode/com.ts
+++ b/src/mode/com.ts
@@ -113,7 +113,13 @@ export default class COM extends EventEmitter {
         const availablePorts = ports
             .map((port) => {
                 const deviceMatch = devices.find(
-                    (deviceItem) => port.vendorId === deviceItem.vid && port.productId === deviceItem.pid
+                    (deviceItem) =>
+                        deviceItem.vid &&
+                        deviceItem.pid &&
+                        port.vendorId &&
+                        port.productId &&
+                        port.vendorId.toLowerCase() === deviceItem.vid.toLowerCase() &&
+                        port.productId.toLowerCase() === deviceItem.pid.toLowerCase()
                 );
                 return {
                     ...port,
@@ -124,7 +130,7 @@ export default class COM extends EventEmitter {
 
         let foundPorts = [];
         for (const port_2 of availablePorts) {
-            if (port_2.deviceName === device) foundPorts.push(port_2.path);
+            if (port_2.deviceName?.toLowerCase() === device.toLowerCase()) foundPorts.push(port_2.path);
         }
 
         for (const btDevice of bluetoothDevices) {
@@ -132,7 +138,7 @@ export default class COM extends EventEmitter {
                 foundPorts.push(btDevice.comPort);
             }
         }
-
+        
         return foundPorts;
     }