diff --git a/DS4Windows/DS4Library/DS4Devices.cs b/DS4Windows/DS4Library/DS4Devices.cs
index 0354ec9..ecd4656 100644
--- a/DS4Windows/DS4Library/DS4Devices.cs
+++ b/DS4Windows/DS4Library/DS4Devices.cs
@@ -35,16 +35,19 @@ namespace DS4Windows
         internal const int NACON_VID = 0x146B;
         internal const int HORI_VID = 0x0F0D;
 
+        // https://support.steampowered.com/kb_article.php?ref=5199-TOKV-4426&l=english web site has a list of other PS4 compatible device VID/PID values and brand names. 
+        // However, not all those are guaranteed to work with DS4Windows app so support is added case by case when users of DS4Windows app tests non-official DS4 gamepads.
+
         private static VidPidInfo[] knownDevices =
         {
             new VidPidInfo(SONY_VID, 0xBA0, "Sony WA"),
             new VidPidInfo(SONY_VID, 0x5C4, "DS4 v.1"),
             new VidPidInfo(SONY_VID, 0x09CC, "DS4 v.2"),
-            new VidPidInfo(RAZER_VID, 0x1000),
-            new VidPidInfo(NACON_VID, 0x0D01),
-            new VidPidInfo(NACON_VID, 0x0D02),
+            new VidPidInfo(RAZER_VID, 0x1000, "Razer Raiju PS4"),
+            new VidPidInfo(NACON_VID, 0x0D01, "Nacon Revol Pro v.1"),
+            new VidPidInfo(NACON_VID, 0x0D02, "Nacon Revol Pro v.2"),
             new VidPidInfo(HORI_VID, 0x00EE, "Hori PS4 Mini"),    // Hori PS4 Mini Wired Gamepad
-            new VidPidInfo(0x7545, 0x0104),
+            new VidPidInfo(0x7545, 0x0104, "Armor 3 LU Cobra"), // Armor 3 Level Up Cobra
             new VidPidInfo(0x2E95, 0x7725, "Scuf Vantage"), // Scuf Vantage gamepad
             new VidPidInfo(0x11C0, 0x4001, "PS4 Fun"), // PS4 Fun Controller
             new VidPidInfo(RAZER_VID, 0x1007, "Razer Raiju TE"), // Razer Raiju Tournament Edition
@@ -53,6 +56,8 @@ namespace DS4Windows
             new VidPidInfo(SONY_VID, 0x05C5, "CronusMax (PS4 Mode)"), // CronusMax (PS4 Output Mode)
             new VidPidInfo(0x0C12, 0x57AB, "Warrior Joypad JS083"), // Warrior Joypad JS083 (wired). Custom lightbar color doesn't work, but everything else works OK (except touchpad and gyro because the gamepad doesnt have those).
             new VidPidInfo(0x0C12, 0x0E16, "Steel Play MetalTech"), // Steel Play Metaltech P4 (wired)
+            new VidPidInfo(NACON_VID, 0x0D08, "Nacon Revol U Pro"), // Nacon Revolution Unlimited Pro
+            new VidPidInfo(HORI_VID, 0x0084, "Hori Fighting Cmd"), // Hori Fighting Commander (special kind of gamepad without touchpad or sticks. There is a hardware switch to alter d-pad type between dpad and LS/RS)
         };
 
         private static string devicePathToInstanceId(string devicePath)
diff --git a/DS4Windows/HidLibrary/HidDevice.cs b/DS4Windows/HidLibrary/HidDevice.cs
index 0d9c894..9352937 100644
--- a/DS4Windows/HidLibrary/HidDevice.cs
+++ b/DS4Windows/HidLibrary/HidDevice.cs
@@ -475,12 +475,19 @@ namespace DS4Windows
             if (serial != null)
                 return serial;
 
+            // Some devices don't have MAC address (especially gamepads with USB only suports in PC). If the serial number reading fails 
+            // then use dummy zero MAC address, because there is a good chance the gamepad stll works in DS4Windows app (the code would throw
+            // an index out of bounds exception anyway without IF-THEN-ELSE checks after trying to read a serial number).
+
             if (Capabilities.InputReportByteLength == 64)
             {
                 byte[] buffer = new byte[16];
                 buffer[0] = 18;
-                readFeatureData(buffer);                
-                serial =  String.Format("{0:X02}:{1:X02}:{2:X02}:{3:X02}:{4:X02}:{5:X02}", buffer[6], buffer[5], buffer[4], buffer[3], buffer[2], buffer[1]);
+                if (readFeatureData(buffer))
+                    serial = String.Format("{0:X02}:{1:X02}:{2:X02}:{3:X02}:{4:X02}:{5:X02}", buffer[6], buffer[5], buffer[4], buffer[3], buffer[2], buffer[1]);
+                else
+                    serial = "00:00:00:00:00:00";
+
                 return serial;
             }
             else
@@ -491,10 +498,15 @@ namespace DS4Windows
 #else
                 uint bufferLen = 126;
 #endif
-                NativeMethods.HidD_GetSerialNumberString(safeReadHandle.DangerousGetHandle(), buffer, bufferLen);
-                string MACAddr = System.Text.Encoding.Unicode.GetString(buffer).Replace("\0", string.Empty).ToUpper();
-                MACAddr = $"{MACAddr[0]}{MACAddr[1]}:{MACAddr[2]}{MACAddr[3]}:{MACAddr[4]}{MACAddr[5]}:{MACAddr[6]}{MACAddr[7]}:{MACAddr[8]}{MACAddr[9]}:{MACAddr[10]}{MACAddr[11]}";
-                serial = MACAddr;
+                if (NativeMethods.HidD_GetSerialNumberString(safeReadHandle.DangerousGetHandle(), buffer, bufferLen))
+                {
+                    string MACAddr = System.Text.Encoding.Unicode.GetString(buffer).Replace("\0", string.Empty).ToUpper();
+                    MACAddr = $"{MACAddr[0]}{MACAddr[1]}:{MACAddr[2]}{MACAddr[3]}:{MACAddr[4]}{MACAddr[5]}:{MACAddr[6]}{MACAddr[7]}:{MACAddr[8]}{MACAddr[9]}:{MACAddr[10]}{MACAddr[11]}";
+                    serial = MACAddr;
+                }
+                else
+                    serial = "00:00:00:00:00:00";
+
                 return serial;
             }
         }