diff --git a/Controllers/ColorfulGPUController/ColorfulGPUController.cpp b/Controllers/ColorfulGPUController/ColorfulGPUController.cpp
index b92765a33..fa62a467d 100644
--- a/Controllers/ColorfulGPUController/ColorfulGPUController.cpp
+++ b/Controllers/ColorfulGPUController/ColorfulGPUController.cpp
@@ -45,7 +45,8 @@ void ColorfulGPUController::SetDirect(RGBColor color)
     uint8_t g = RGBGetGValue(color);
     uint8_t b = RGBGetBValue(color);
 
-    if(this->bus->info.pci_subsystem_device == COLORFUL_IGAME_RTX_4070_VULCAN_OCV)
+    if(this->bus->info.pci_subsystem_device == COLORFUL_IGAME_RTX_4070_VULCAN_OCV
+    || this->bus->info.pci_subsystem_device == COLORFUL_IGAME_RTX_4090_NEPTUNE_OCV)
     {
         uint8_t data_pkt[COLORFUL_PACKET_LENGTH_V2] = { 0xAA, 0xEF, 0x01, 0x04, 0x88, 0x26 };
         for(int i=6; i < COLORFUL_PACKET_LENGTH_V2 -2; i = i + 3)
diff --git a/Controllers/ColorfulGPUController/ColorfulGPUControllerDetect.cpp b/Controllers/ColorfulGPUController/ColorfulGPUControllerDetect.cpp
index 075d7f2cc..c99372ddd 100644
--- a/Controllers/ColorfulGPUController/ColorfulGPUControllerDetect.cpp
+++ b/Controllers/ColorfulGPUController/ColorfulGPUControllerDetect.cpp
@@ -74,6 +74,7 @@ REGISTER_I2C_PCI_DETECTOR("iGame GeForce RTX 4070 Vulcan OC-V",            Detec
 REGISTER_I2C_PCI_DETECTOR("iGame GeForce RTX 4070 SUPER Ultra W OC-V",     DetectColorfulGPUControllers,   NVIDIA_VEN, NVIDIA_RTX4070S_DEV,         COLORFUL_SUB_VEN,   COLORFUL_IGAME_RTX_4070S_ULTRAW_OCV,            0x61);
 REGISTER_I2C_PCI_DETECTOR("iGame GeForce RTX 4080 Ultra W OC-V",           DetectColorfulGPUControllers,   NVIDIA_VEN, NVIDIA_RTX4080_DEV,          COLORFUL_SUB_VEN,   COLORFUL_IGAME_RTX_4080_ULTRAW_OCV,             0x61);
 REGISTER_I2C_PCI_DETECTOR("iGame GeForce RTX 4080 Ultra W OC-V",           DetectColorfulGPUControllers,   NVIDIA_VEN, NVIDIA_RTX4080_DEV,          COLORFUL_SUB_VEN,   COLORFUL_IGAME_RTX_4080_ULTRAW_OCV2,            0x61);
+REGISTER_I2C_PCI_DETECTOR("iGame GeForce RTX 4090 Neptune OC-V",           DetectColorfulGPUControllers,   NVIDIA_VEN, NVIDIA_RTX4090_DEV,          COLORFUL_SUB_VEN,   COLORFUL_IGAME_RTX_4090_NEPTUNE_OCV,            0x61);
 REGISTER_I2C_PCI_DETECTOR("iGame GeForce RTX 4090 Advanced OC-V",          DetectColorfulGPUControllers,   NVIDIA_VEN, NVIDIA_RTX4090_DEV,          COLORFUL_SUB_VEN,   COLORFUL_IGAME_RTX_4090_ADVANCED_OCV,           0x61);
 REGISTER_I2C_PCI_DETECTOR("iGame GeForce RTX 4090 Advanced OC-V",          DetectColorfulGPUControllers,   NVIDIA_VEN, NVIDIA_RTX4090_DEV,          COLORFUL_SUB_VEN,   COLORFUL_IGAME_RTX_4090_ADVANCED_OCV2,          0x61);
 REGISTER_I2C_PCI_DETECTOR("iGame GeForce RTX 5060 Ultra W OC",             DetectColorfulGPUControllers,   NVIDIA_VEN, NVIDIA_RTX5060_DEV,          COLORFUL_SUB_VEN,   COLORFUL_IGAME_RTX_5060_ULTRAW_OC,              0x61);
diff --git a/pci_ids/pci_ids.h b/pci_ids/pci_ids.h
index c98c64998..a7de7387b 100644
--- a/pci_ids/pci_ids.h
+++ b/pci_ids/pci_ids.h
@@ -446,6 +446,7 @@
 #define COLORFUL_IGAME_RTX_4070TI_SUPER_ULTRA_W                 0x1500
 #define COLORFUL_IGAME_RTX_4080_ULTRAW_OCV                      0x1500
 #define COLORFUL_IGAME_RTX_4080_ULTRAW_OCV2                     0x1501
+#define COLORFUL_IGAME_RTX_4090_NEPTUNE_OCV                     0x1301
 #define COLORFUL_IGAME_RTX_4090_ADVANCED_OCV                    0x1400
 #define COLORFUL_IGAME_RTX_4090_ADVANCED_OCV2                   0x1401
 #define COLORFUL_IGAME_RTX_5060_ULTRAW_OC                       0x1500