diff --git a/README.md b/README.md
index 2e09275..fc0280c 100644
--- a/README.md
+++ b/README.md
@@ -100,10 +100,12 @@ ip link set up eth1 # in my machine, the nic name is eth1
 
 ## History
 
-### [WIP] 1.2.3
+### 1.2.3
 
 _Date 2022.11.16_
 
+This version support i226 with device id 8086:125C, firmware version: 2014:8877
+
 * igc: Remove phy->type checking
 * igc: Remove _I_PHY_ID checking
 
diff --git a/igc_hw.h b/igc_hw.h
index 8683458..54f3c99 100644
--- a/igc_hw.h
+++ b/igc_hw.h
@@ -16,22 +16,22 @@
 #include "igc_i225.h"
 #include "igc_base.h"
 
-#define IGC_DEV_ID_I225_LM			0x15F2
-#define IGC_DEV_ID_I225_V			0x15F3
-#define IGC_DEV_ID_I225_I			0x15F8
-#define IGC_DEV_ID_I220_V			0x15F7
-#define IGC_DEV_ID_I225_K			0x3100
-#define IGC_DEV_ID_I225_K2			0x3101
-#define IGC_DEV_ID_I226_K			0x3102
-#define IGC_DEV_ID_I225_LMVP		0x5502
-#define IGC_DEV_ID_I226_LMVP		0x5503
-#define IGC_DEV_ID_I225_IT			0x0D9F
-#define IGC_DEV_ID_I226_LM			0x125B
-#define IGC_DEV_ID_I226_V			0x125C
-#define IGC_DEV_ID_I226_IT			0x125D
-#define IGC_DEV_ID_I221_V			0x125E
-#define IGC_DEV_ID_I226_BLANK_NVM		0x125F
-#define IGC_DEV_ID_I225_BLANK_NVM		0x15FD
+#define IGC_DEV_ID_I225_LM        0x15F2
+#define IGC_DEV_ID_I225_V         0x15F3
+#define IGC_DEV_ID_I225_I         0x15F8
+#define IGC_DEV_ID_I220_V         0x15F7
+#define IGC_DEV_ID_I225_K         0x3100
+#define IGC_DEV_ID_I225_K2        0x3101
+#define IGC_DEV_ID_I226_K         0x3102
+#define IGC_DEV_ID_I225_LMVP      0x5502
+#define IGC_DEV_ID_I226_LMVP      0x5503
+#define IGC_DEV_ID_I225_IT        0x0D9F
+#define IGC_DEV_ID_I226_LM        0x125B
+#define IGC_DEV_ID_I226_V         0x125C
+#define IGC_DEV_ID_I226_IT        0x125D
+#define IGC_DEV_ID_I221_V         0x125E
+#define IGC_DEV_ID_I226_BLANK_NVM 0x125F
+#define IGC_DEV_ID_I225_BLANK_NVM 0x15FD
 
 /* Function pointers for the MAC. */
 struct igc_mac_operations {