diff --git a/lib-ee/emqx_ee_connector/src/emqx_ee_connector_dynamo.erl b/lib-ee/emqx_ee_connector/src/emqx_ee_connector_dynamo.erl
index 2170827d6..01554f90a 100644
--- a/lib-ee/emqx_ee_connector/src/emqx_ee_connector_dynamo.erl
+++ b/lib-ee/emqx_ee_connector/src/emqx_ee_connector_dynamo.erl
@@ -34,7 +34,7 @@
 -import(hoconsc, [mk/2, enum/1, ref/2]).
 
 -define(DYNAMO_HOST_OPTIONS, #{
-    default_port => 8000
+    default_port => 80
 }).
 
 %%=====================================================================
diff --git a/lib-ee/emqx_ee_connector/src/emqx_ee_connector_dynamo_client.erl b/lib-ee/emqx_ee_connector/src/emqx_ee_connector_dynamo_client.erl
index e0d8ee4bf..0340655b4 100644
--- a/lib-ee/emqx_ee_connector/src/emqx_ee_connector_dynamo_client.erl
+++ b/lib-ee/emqx_ee_connector/src/emqx_ee_connector_dynamo_client.erl
@@ -71,8 +71,14 @@ init(#{
     {ok, #{}}.
 
 handle_call(is_connected, _From, State) ->
-    _ = erlcloud_ddb2:list_tables(),
-    {reply, true, State};
+    IsConnected =
+        case erlcloud_ddb2:list_tables([{limit, 1}]) of
+            {ok, _} ->
+                true;
+            _ ->
+                false
+        end,
+    {reply, IsConnected, State};
 handle_call({query, Table, Query, Templates}, _From, State) ->
     Result = do_query(Table, Query, Templates),
     {reply, Result, State};