diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as5916-54xm/onlp/builds/src/module/src/thermali.c b/packages/platforms/accton/x86-64/x86-64-accton-as5916-54xm/onlp/builds/src/module/src/thermali.c
old mode 100644
new mode 100755
index 742a4dd1..1e9f4161
--- a/packages/platforms/accton/x86-64/x86-64-accton-as5916-54xm/onlp/builds/src/module/src/thermali.c
+++ b/packages/platforms/accton/x86-64/x86-64-accton-as5916-54xm/onlp/builds/src/module/src/thermali.c
@@ -26,6 +26,7 @@
 #include <onlplib/file.h>
 #include <onlp/platformi/thermali.h>
 #include "platform_lib.h"
+#include <limits.h>
 
 #define VALIDATE(_id)                           \
     do {                                        \
@@ -34,11 +35,16 @@
         }                                       \
     } while(0)
 
+
+/*Thermal 1 can be at 0x48 for R0A board, or 0x4C otherwise.*/
+static int thermal1_addrs[] = {0x4c, 0x48};
+static int thermal1_addr = -1;
+
 static char* devfiles__[] =  /* must map with onlp_thermal_id */
 {
     NULL,
     NULL,                  /* CPU_CORE files */
-    "/sys/bus/i2c/devices/10-0048*temp1_input",
+    "/sys/bus/i2c/devices/10-00%2x*temp1_input",
     "/sys/bus/i2c/devices/10-0049*temp1_input",
     "/sys/bus/i2c/devices/10-004a*temp1_input",
     "/sys/bus/i2c/devices/10-004b*temp1_input",
@@ -62,7 +68,7 @@ static onlp_thermal_info_t linfo[] = {
             ONLP_THERMAL_STATUS_PRESENT,
             ONLP_THERMAL_CAPS_ALL, 0, ONLP_THERMAL_THRESHOLD_INIT_DEFAULTS
         },	
-	{ { ONLP_THERMAL_ID_CREATE(THERMAL_1_ON_MAIN_BROAD), "LM75-1-48", 0}, 
+	{ { ONLP_THERMAL_ID_CREATE(THERMAL_1_ON_MAIN_BROAD), "LM75-1-%2X", 0},
             ONLP_THERMAL_STATUS_PRESENT,
             ONLP_THERMAL_CAPS_ALL, 0, ONLP_THERMAL_THRESHOLD_INIT_DEFAULTS
         },
@@ -97,6 +103,30 @@ onlp_thermali_init(void)
     return ONLP_STATUS_OK;
 }
 
+/*check which addr of thermal1_addrs[] can be read.*/
+static int
+_get_valid_t1_addr(char *path, int *addr)
+{
+    char fname[PATH_MAX];
+    int i, rv, tmp;
+    if (thermal1_addr > 0){
+        *addr = thermal1_addr;
+        return ONLP_STATUS_OK;
+    }
+
+    for (i=0; i<AIM_ARRAYSIZE(thermal1_addrs); i++){
+        snprintf(fname, sizeof(fname), path, thermal1_addrs[i]);
+        rv = onlp_file_read_int(&tmp, fname);
+        if (rv == ONLP_STATUS_OK){
+            thermal1_addr = thermal1_addrs[i];
+            *addr = thermal1_addr;
+            return ONLP_STATUS_OK;
+        }
+    }
+    return ONLP_STATUS_E_INVALID;
+}
+
+
 /*
  * Retrieve the information structure for the given thermal OID.
  *
@@ -111,18 +141,44 @@ int
 onlp_thermali_info_get(onlp_oid_t id, onlp_thermal_info_t* info)
 {
     int   tid;
+    char *devfile;
+    char fname[PATH_MAX];
+
     VALIDATE(id);
 	
     tid = ONLP_OID_ID_GET(id);
-	
     /* Set the onlp_oid_hdr_t and capabilities */		
     *info = linfo[tid];
-
     if(tid == THERMAL_CPU_CORE) {
         int rv = onlp_file_read_int_max(&info->mcelsius, cpu_coretemp_files);
         return rv;
     }
 
-    return onlp_file_read_int(&info->mcelsius, devfiles__[tid]);
+    if (tid >= AIM_ARRAYSIZE(devfiles__)){
+        return ONLP_STATUS_E_PARAM;
+    }
+
+	devfile = devfiles__[tid];
+    if (tid == THERMAL_1_ON_MAIN_BROAD)
+    {
+        onlp_oid_desc_t *des = &info->hdr.description;
+        char tmp[PATH_MAX];
+        int t1_addr = thermal1_addrs[0];
+        int rv;
+
+        rv = _get_valid_t1_addr(devfiles__[tid], &t1_addr);
+        if(rv != ONLP_STATUS_OK)
+            return rv;
+
+        /*Get real path of THERMAL_1 dev file*/
+        snprintf(fname, sizeof(fname), devfiles__[tid], t1_addr);
+        devfile = fname;
+
+        /*Replace description*/
+        strncpy(tmp, *des, sizeof(tmp));
+        snprintf(*des, sizeof(*des), tmp, t1_addr);
+    }
+
+    return onlp_file_read_int(&info->mcelsius, devfile);
 }
 
diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as5916-54xm/platform-config/r0/src/python/x86_64_accton_as5916_54xm_r0/__init__.py b/packages/platforms/accton/x86-64/x86-64-accton-as5916-54xm/platform-config/r0/src/python/x86_64_accton_as5916_54xm_r0/__init__.py
index e8b16a74..b4a6e226 100644
--- a/packages/platforms/accton/x86-64/x86-64-accton-as5916-54xm/platform-config/r0/src/python/x86_64_accton_as5916_54xm_r0/__init__.py
+++ b/packages/platforms/accton/x86-64/x86-64-accton-as5916-54xm/platform-config/r0/src/python/x86_64_accton_as5916_54xm_r0/__init__.py
@@ -27,7 +27,8 @@ class OnlPlatform_x86_64_accton_as5916_54xm_r0(OnlPlatformAccton,
                 ('as5916_54xm_fan', 0x66, 9),
 
                 # inititate LM75
-                ('lm75', 0x48, 10),
+                ('lm75', 0x48, 10),  #For R0A
+                ('lm75', 0x4c, 10),  #For R0B or later
                 ('lm75', 0x49, 10),
                 ('lm75', 0x4a, 10),
                 ('lm75', 0x4b, 10),