diff --git a/IO4/esp32-s3-io4.json b/IO4/esp32-s3-io4.json
new file mode 100644
index 0000000..21032c6
--- /dev/null
+++ b/IO4/esp32-s3-io4.json
@@ -0,0 +1,51 @@
+{
+  "build": {
+    "arduino":{
+      "ldscript": "esp32s3_out.ld",
+      "memory_type": "qio_qspi"
+    },
+    "core": "esp32",
+    "extra_flags": [
+      "-DARDUINO_ESP32S3_DEV",
+      "-DARDUINO_USB_MODE=1",
+      "-DARDUINO_RUNNING_CORE=1",
+      "-DARDUINO_EVENT_RUNNING_CORE=1"
+    ],
+    "f_cpu": "240000000L",
+    "f_flash": "80000000L",
+    "flash_mode": "qio",
+    "hwids": [
+      [
+        "0x303A",
+        "0x1001"
+      ]
+    ],
+    "mcu": "esp32s3",
+    "variant": "esp32s3"
+  },
+  "connectivity": [
+    "bluetooth",
+    "wifi"
+  ],
+  "debug": {
+    "default_tool": "esp-builtin",
+    "onboard_tools": [
+      "esp-builtin"
+    ],
+    "openocd_target": "esp32s3.cfg"
+  },
+  "frameworks": [
+    "arduino",
+    "espidf"
+  ],
+  "name": "ESP32-S3 IO4 Board (4MB Flash, No PSRAM)",
+  "upload": {
+    "flash_size": "4MB",
+    "maximum_ram_size": 327680,
+    "maximum_size": 4194304,
+    "require_upload_port": true,
+    "speed": 460800
+  },
+  "url": "https://github.com/hykilpikonna/OpenHardware/tree/main/IO4",
+  "vendor": "Espressif"
+}
\ No newline at end of file