diff --git a/EonaCat.HID/EventArguments/HidDataReceivedEventArgs.cs b/EonaCat.HID/EventArguments/HidDataReceivedEventArgs.cs
index 41719a5..fa18444 100644
--- a/EonaCat.HID/EventArguments/HidDataReceivedEventArgs.cs
+++ b/EonaCat.HID/EventArguments/HidDataReceivedEventArgs.cs
@@ -2,6 +2,9 @@
 
 namespace EonaCat.HID.EventArguments
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     /// <summary>
     /// Event args for received data
     /// </summary>
diff --git a/EonaCat.HID/EventArguments/HidErrorEventArgs.cs b/EonaCat.HID/EventArguments/HidErrorEventArgs.cs
index 97c76ab..b9a6d56 100644
--- a/EonaCat.HID/EventArguments/HidErrorEventArgs.cs
+++ b/EonaCat.HID/EventArguments/HidErrorEventArgs.cs
@@ -2,6 +2,9 @@
 
 namespace EonaCat.HID.EventArguments
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     /// <summary>
     /// Event args for error events
     /// </summary>
diff --git a/EonaCat.HID/EventArguments/HidEventArgs.cs b/EonaCat.HID/EventArguments/HidEventArgs.cs
index bd431de..125968c 100644
--- a/EonaCat.HID/EventArguments/HidEventArgs.cs
+++ b/EonaCat.HID/EventArguments/HidEventArgs.cs
@@ -2,6 +2,9 @@
 
 namespace EonaCat.HID.EventArguments
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     /// <summary>
     /// Event arguments with HID device info.
     /// </summary>
diff --git a/EonaCat.HID/Helpers/ByteHelper.cs b/EonaCat.HID/Helpers/ByteHelper.cs
index 2c394f0..5f37e6f 100644
--- a/EonaCat.HID/Helpers/ByteHelper.cs
+++ b/EonaCat.HID/Helpers/ByteHelper.cs
@@ -5,7 +5,7 @@ using System.Text;
 namespace EonaCat.HID.Helpers
 {
     // This file is part of the EonaCat project(s) which is released under the Apache License.
-    // See the LICENSE file or go to https://EonaCat.com/License for full license details.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
 
     public static class ByteHelper
     {
diff --git a/EonaCat.HID/HidFactory.cs b/EonaCat.HID/HidFactory.cs
index e416a7a..8333051 100644
--- a/EonaCat.HID/HidFactory.cs
+++ b/EonaCat.HID/HidFactory.cs
@@ -3,6 +3,9 @@ using System.Runtime.InteropServices;
 
 namespace EonaCat.HID
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     /// <summary>
     /// Main static factory class to create platform-specific implementations.
     /// </summary>
diff --git a/EonaCat.HID/HidLinux.cs b/EonaCat.HID/HidLinux.cs
index 39e9753..3b8d04e 100644
--- a/EonaCat.HID/HidLinux.cs
+++ b/EonaCat.HID/HidLinux.cs
@@ -10,6 +10,9 @@ using System.Threading.Tasks;
 
 namespace EonaCat.HID
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     internal sealed class HidLinux : IHid
     {
         private readonly string _devicePath;
diff --git a/EonaCat.HID/HidMac.cs b/EonaCat.HID/HidMac.cs
index 1e1cf16..d80e032 100644
--- a/EonaCat.HID/HidMac.cs
+++ b/EonaCat.HID/HidMac.cs
@@ -7,6 +7,9 @@ using System.Threading.Tasks;
 
 namespace EonaCat.HID
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     internal sealed class HidMac : IHid
     {
         private IntPtr _deviceHandle;
diff --git a/EonaCat.HID/HidWindows.cs b/EonaCat.HID/HidWindows.cs
index 5043638..8d9688a 100644
--- a/EonaCat.HID/HidWindows.cs
+++ b/EonaCat.HID/HidWindows.cs
@@ -14,6 +14,9 @@ using static EonaCat.HID.Managers.Windows.NativeMethods;
 
 namespace EonaCat.HID
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     internal sealed class HidWindows : IHid
     {
         private SafeFileHandle _deviceHandle;
diff --git a/EonaCat.HID/IHid.cs b/EonaCat.HID/IHid.cs
index 88ed556..21d7244 100644
--- a/EonaCat.HID/IHid.cs
+++ b/EonaCat.HID/IHid.cs
@@ -6,6 +6,9 @@ using EonaCat.HID.EventArguments;
 
 namespace EonaCat.HID
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     /// <summary>
     /// Interface abstraction for a HID device.
     /// </summary>
diff --git a/EonaCat.HID/IHidManager.cs b/EonaCat.HID/IHidManager.cs
index 4789e52..b021b65 100644
--- a/EonaCat.HID/IHidManager.cs
+++ b/EonaCat.HID/IHidManager.cs
@@ -4,6 +4,9 @@ using System.Collections.Generic;
 
 namespace EonaCat.HID
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     /// <summary>
     /// Interface for manager to enumerate devices and monitor connect/disconnect
     /// </summary>
diff --git a/EonaCat.HID/Managers/HidManagerLinux.cs b/EonaCat.HID/Managers/HidManagerLinux.cs
index ca088ed..0f8a28a 100644
--- a/EonaCat.HID/Managers/HidManagerLinux.cs
+++ b/EonaCat.HID/Managers/HidManagerLinux.cs
@@ -6,10 +6,12 @@ using System.Linq;
 using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
-using static EonaCat.HID.Managers.Linux.NativeMethods;
 
 namespace EonaCat.HID.Managers.Linux
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     internal sealed class HidManagerLinux : IHidManager
     {
         public event EventHandler<HidEventArgs> OnDeviceInserted;
diff --git a/EonaCat.HID/Managers/HidManagerMac.cs b/EonaCat.HID/Managers/HidManagerMac.cs
index 3bc65ed..2825319 100644
--- a/EonaCat.HID/Managers/HidManagerMac.cs
+++ b/EonaCat.HID/Managers/HidManagerMac.cs
@@ -6,6 +6,9 @@ using static EonaCat.HID.Managers.Mac.NativeMethods;
 
 namespace EonaCat.HID.Managers.Mac
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     internal sealed class HidManagerMac : IHidManager, IDisposable
     {
         private IntPtr _hidManager;
diff --git a/EonaCat.HID/Managers/HidManagerWindows.cs b/EonaCat.HID/Managers/HidManagerWindows.cs
index cf84c7d..203c6e8 100644
--- a/EonaCat.HID/Managers/HidManagerWindows.cs
+++ b/EonaCat.HID/Managers/HidManagerWindows.cs
@@ -9,6 +9,9 @@ using static EonaCat.HID.Managers.Windows.NativeMethods;
 
 namespace EonaCat.HID.Managers.Windows
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     internal sealed class HidManagerWindows : IHidManager, IDisposable
     {
         private const int DIGCF_PRESENT = 0x00000002;
diff --git a/README.md b/README.md
index d51bba8..963fcaf 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
 # EonaCat.HID
 
-EonaCat Usb Devices
\ No newline at end of file
+Cross platform library for HID devices.
+Works on Windows, Linux and macOS.