diff --git a/src/ansys/dpf/core/dpf_operator.py b/src/ansys/dpf/core/dpf_operator.py
index ed5f69182ad..12af7f2cdd2 100644
--- a/src/ansys/dpf/core/dpf_operator.py
+++ b/src/ansys/dpf/core/dpf_operator.py
@@ -26,6 +26,7 @@
 import os
 import traceback
 import warnings
+import numpy
 
 from enum import Enum
 from ansys.dpf.core.check_version import (
@@ -276,17 +277,11 @@ def connect(self, pin, inpt, pin_out=0):
             self._api.operator_connect_operator_output(self, pin, inpt, pin_out)
         elif isinstance(inpt, Output):
             self._api.operator_connect_operator_output(self, pin, inpt._operator, inpt._pin)
-        elif isinstance(inpt, list):
+        elif isinstance(inpt, (list, numpy.ndarray)):
             from ansys.dpf.core import collection
 
-            if server_meet_version("3.0", self._server):
-                inpt = collection.CollectionBase.integral_collection(inpt, self._server)
-                self._api.operator_connect_collection_as_vector(self, pin, inpt)
-            else:
-                if all(isinstance(x, int) for x in inpt):
-                    self._api.operator_connect_vector_int(self, pin, inpt, len(inpt))
-                else:
-                    self._api.operator_connect_vector_double(self, pin, inpt, len(inpt))
+            inpt = collection.CollectionBase.integral_collection(inpt, self._server)
+            self._api.operator_connect_collection_as_vector(self, pin, inpt)
         elif isinstance(inpt, dict):
             from ansys.dpf.core import label_space
 
diff --git a/src/ansys/dpf/core/workflow.py b/src/ansys/dpf/core/workflow.py
index 2e9b8eaa357..7faeb2958ab 100644
--- a/src/ansys/dpf/core/workflow.py
+++ b/src/ansys/dpf/core/workflow.py
@@ -31,6 +31,8 @@
 from enum import Enum
 from typing import Union
 
+import numpy
+
 from ansys import dpf
 from ansys.dpf.core import dpf_operator, inputs, outputs
 from ansys.dpf.core.check_version import (
@@ -214,17 +216,11 @@ def connect(self, pin_name, inpt, pin_out=0):
             self._api.work_flow_connect_operator_output(self, pin_name, inpt, pin_out)
         elif isinstance(inpt, dpf_operator.Output):
             self._api.work_flow_connect_operator_output(self, pin_name, inpt._operator, inpt._pin)
-        elif isinstance(inpt, list):
+        elif isinstance(inpt, (list, numpy.ndarray)):
             from ansys.dpf.core import collection
 
-            if server_meet_version("3.0", self._server):
-                inpt = collection.CollectionBase.integral_collection(inpt, self._server)
-                self._api.work_flow_connect_collection_as_vector(self, pin_name, inpt)
-            else:
-                if all(isinstance(x, int) for x in inpt):
-                    self._api.work_flow_connect_vector_int(self, pin_name, inpt, len(inpt))
-                else:
-                    self._api.work_flow_connect_vector_double(self, pin_name, inpt, len(inpt))
+            inpt = collection.CollectionBase.integral_collection(inpt, self._server)
+            self._api.work_flow_connect_collection_as_vector(self, pin_name, inpt)
         elif isinstance(inpt, dict):
             from ansys.dpf.core import label_space
 
diff --git a/tests/test_operator.py b/tests/test_operator.py
index 124e988b503..381ec03a88f 100644
--- a/tests/test_operator.py
+++ b/tests/test_operator.py
@@ -27,6 +27,7 @@
 import weakref
 from pathlib import Path
 
+import numpy
 import numpy as np
 import pytest
 import copy
@@ -93,6 +94,14 @@ def test_connect_list_operator(velocity_acceleration):
     assert fcOut.get_available_ids_for_label() == [1, 2]
 
 
+def test_connect_array_operator(velocity_acceleration):
+    model = dpf.core.Model(velocity_acceleration)
+    op = model.operator("U")
+    op.connect(0, numpy.array([1, 2], numpy.int32))
+    fcOut = op.get_output(0, dpf.core.types.fields_container)
+    assert fcOut.get_available_ids_for_label() == [1, 2]
+
+
 def test_connect_list_operator_builtin(velocity_acceleration):
     model = dpf.core.Model(velocity_acceleration)
     disp = model.results.displacement()
diff --git a/tests/test_workflow.py b/tests/test_workflow.py
index 505965f06ff..58c4d480a0d 100644
--- a/tests/test_workflow.py
+++ b/tests/test_workflow.py
@@ -22,6 +22,7 @@
 
 from pathlib import Path
 
+import numpy
 import numpy as np
 import pytest
 import platform
@@ -137,6 +138,19 @@ def test_connect_list_workflow(velocity_acceleration, server_type):
     assert f_out.get_available_ids_for_label() == [1, 2]
 
 
+def test_connect_array_workflow(velocity_acceleration, server_type):
+    wf = dpf.core.Workflow(server=server_type)
+    wf.progress_bar = False
+    model = dpf.core.Model(velocity_acceleration, server=server_type)
+    op = model.operator("U")
+    wf.add_operator(op)
+    wf.set_input_name("time_scoping", op, 0)
+    wf.set_output_name("field", op, 0)
+    wf.connect("time_scoping", numpy.array([1, 2], numpy.int32))
+    f_out = wf.get_output("field", dpf.core.types.fields_container)
+    assert f_out.get_available_ids_for_label() == [1, 2]
+
+
 def test_connect_fieldscontainer_workflow(server_type):
     wf = dpf.core.Workflow(server=server_type)
     wf.progress_bar = False