diff --git a/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2ControllerDetect.cpp b/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2ControllerDetect.cpp
index e884f85ba..3068552e8 100644
--- a/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2ControllerDetect.cpp
+++ b/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2ControllerDetect.cpp
@@ -91,3 +91,4 @@ REGISTER_HID_DETECTOR_IP("Corsair Slipstream Wireless Receiver SW", DetectCorsai
 | Mousemat                                                                                              |
 \*-----------------------------------------------------------------------------------------------------*/
 REGISTER_HID_DETECTOR_IP("Corsair MM700",                           DetectCorsairV2SoftwareControllers, CORSAIR_VID,    CORSAIR_MM700_PID,                      1,  0xFF42);
+REGISTER_HID_DETECTOR_IP("Corsair MM700 3XL",                       DetectCorsairV2SoftwareControllers, CORSAIR_VID,    CORSAIR_MM700_3XL_PID,                  1,  0xFF42);
diff --git a/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2Devices.cpp b/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2Devices.cpp
index 8987099c6..6b41627db 100644
--- a/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2Devices.cpp
+++ b/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2Devices.cpp
@@ -1338,6 +1338,23 @@ static const corsair_v2_device mm700_device =
     nullptr
 };
 
+static const corsair_v2_device mm700_3xl_device =
+{
+    CORSAIR_MM700_3XL_PID,
+    DEVICE_TYPE_MOUSEMAT,
+    1,
+    3,
+    {
+        &mm700_left_zone,
+        &mm700_right_zone,
+        &mm700_logo_zone,
+        nullptr,
+        nullptr,
+        nullptr
+    },
+    nullptr
+};
+
 /*-------------------------------------------------------------------------*\
 |  DEVICE MASTER LIST                                                       |
 \*-------------------------------------------------------------------------*/
@@ -1379,6 +1396,7 @@ const corsair_v2_device* corsair_v2_device_list_data[] =
 |  MOUSEMATS                                                        |
 \*-----------------------------------------------------------------*/
     &mm700_device,
+    &mm700_3xl_device,
 };
 
 const unsigned int CORSAIR_V2_DEVICE_COUNT = (sizeof(corsair_v2_device_list_data) / sizeof(corsair_v2_device_list_data[ 0 ]));
diff --git a/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2Devices.h b/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2Devices.h
index 4e541610d..62a691fde 100644
--- a/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2Devices.h
+++ b/Controllers/CorsairPeripheralV2Controller/CorsairPeripheralV2Devices.h
@@ -103,6 +103,7 @@ typedef struct
 | Corsair V2 Protocol Mousemats                         |
 \*-----------------------------------------------------*/
 #define CORSAIR_MM700_PID                           0x1B9B
+#define CORSAIR_MM700_3XL_PID                       0x1BC9
 
 /*-----------------------------------------------------*\
 | These constant values are defined in                  |