diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/platform_lib.c b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/platform_lib.c
old mode 100644
new mode 100755
index ea7c7548..d44f0364
--- a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/platform_lib.c
+++ b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/platform_lib.c
@@ -173,3 +173,26 @@ int psu_ym2651y_pmbus_info_set(int id, char *node, int value)
 
     return ONLP_STATUS_OK;
 }
+
+#define PSU_SERIAL_NUMBER_LEN   18
+
+int psu_serial_number_get(int id, char *serial, int serial_len)
+{
+    int   size = 0;
+    int   ret  = ONLP_STATUS_OK;
+    char *prefix = NULL;
+
+    if (serial == NULL || serial_len < PSU_SERIAL_NUMBER_LEN) {
+        return ONLP_STATUS_E_PARAM;
+    }
+
+    prefix = (id == PSU1_ID) ? PSU1_AC_PMBUS_PREFIX : PSU2_AC_PMBUS_PREFIX;
+
+    ret = onlp_file_read((uint8_t*)serial, PSU_SERIAL_NUMBER_LEN, &size, "%s%s", prefix, "psu_mfr_serial");
+    if (ret != ONLP_STATUS_OK || size != PSU_SERIAL_NUMBER_LEN) {
+        return ONLP_STATUS_E_INTERNAL;
+    }
+
+    serial[PSU_SERIAL_NUMBER_LEN] = '\0';
+    return ONLP_STATUS_OK;
+}
diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/platform_lib.h b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/platform_lib.h
old mode 100644
new mode 100755
index 98e9d7f8..48a3adb6
--- a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/platform_lib.h
+++ b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/platform_lib.h
@@ -72,6 +72,7 @@ typedef enum psu_type {
 } psu_type_t;
 
 psu_type_t get_psu_type(int id, char* modelname, int modelname_len);
+int psu_serial_number_get(int id, char *serial, int serial_len);
 
 //#define DEBUG_MODE 1
 
diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/psui.c b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/psui.c
old mode 100644
new mode 100755
index 77074bb8..f25b6c10
--- a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/psui.c
+++ b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/onlp/builds/src/module/src/psui.c
@@ -104,6 +104,8 @@ psu_ym2651y_info_get(onlp_psu_info_t* info)
         info->caps |= ONLP_PSU_CAPS_POUT;
     } 
 
+    psu_serial_number_get(index, info->serial, sizeof(info->serial));
+
     return ONLP_STATUS_OK;
 }