diff --git a/src/hal/lolin32_lora.h b/src/hal/lolin32_lora.h
index c6c44337..797c18a4 100644
--- a/src/hal/lolin32_lora.h
+++ b/src/hal/lolin32_lora.h
@@ -31,3 +31,7 @@
 #define OLED_RST U8X8_PIN_NONE  // Not reset pin
 #define OLED_SDA 21             // ESP32 GPIO21 (Pin21) -- OLED SDA
 #define OLED_SCL 22             // ESP32 GPIO22 (Pin22) -- OLED SCL
+
+// I2C config for Microchip 24AA02E64 DEVEUI unique address
+#define MCP_24AA02E64_I2C_ADDRESS 0x50 // I2C address for the 24AA02E64 
+#define MCP_24AA02E64_MAC_ADDRESS 0xF8 // Memory adress of unique deveui 64 bits
diff --git a/src/hal/lolin32lite_lora.h b/src/hal/lolin32lite_lora.h
index c9ce785b..d631ccc0 100644
--- a/src/hal/lolin32lite_lora.h
+++ b/src/hal/lolin32lite_lora.h
@@ -30,3 +30,7 @@
 #define OLED_RST U8X8_PIN_NONE  // Not reset pin
 #define OLED_SDA 14             // ESP32 GPIO14 (Pin14) -- OLED SDA
 #define OLED_SCL 12             // ESP32 GPIO12 (Pin12) -- OLED SCL
+
+// I2C config for Microchip 24AA02E64 DEVEUI unique address
+#define MCP_24AA02E64_I2C_ADDRESS 0x50 // I2C address for the 24AA02E64 
+#define MCP_24AA02E64_MAC_ADDRESS 0xF8 // Memory adress of unique deveui 64 bits