diff --git a/homeassistant/components/crownstone/helpers.py b/homeassistant/components/crownstone/helpers.py
index ad12c28d464..58b4dcdba47 100644
--- a/homeassistant/components/crownstone/helpers.py
+++ b/homeassistant/components/crownstone/helpers.py
@@ -31,8 +31,8 @@ def list_ports_as_str(
                 port.serial_number,
                 port.manufacturer,
                 port.description,
-                f"{hex(port.vid)[2:]:0>4}".upper(),
-                f"{hex(port.pid)[2:]:0>4}".upper(),
+                f"{hex(port.vid)[2:]:0>4}".upper() if port.vid else None,
+                f"{hex(port.pid)[2:]:0>4}".upper() if port.pid else None,
             )
         )
     ports_as_string.append(MANUAL_PATH)
diff --git a/tests/components/crownstone/test_config_flow.py b/tests/components/crownstone/test_config_flow.py
index 7b05c8ba530..05fde6109e7 100644
--- a/tests/components/crownstone/test_config_flow.py
+++ b/tests/components/crownstone/test_config_flow.py
@@ -51,6 +51,16 @@ def usb_comports() -> MockFixture:
         yield comports_mock
 
 
+@pytest.fixture(name="pyserial_comports_none_types")
+def usb_comports_none_types() -> MockFixture:
+    """Mock pyserial comports."""
+    with patch(
+        "serial.tools.list_ports.comports",
+        MagicMock(return_value=[get_mocked_com_port_none_types()]),
+    ) as comports_mock:
+        yield comports_mock
+
+
 @pytest.fixture(name="usb_path")
 def usb_path() -> MockFixture:
     """Mock usb serial path."""
@@ -104,6 +114,19 @@ def get_mocked_com_port():
     return port
 
 
+def get_mocked_com_port_none_types():
+    """Mock of a serial port with NoneTypes."""
+    port = ListPortInfo("/dev/ttyUSB1234")
+    port.device = "/dev/ttyUSB1234"
+    port.serial_number = None
+    port.manufacturer = None
+    port.description = "crownstone dongle - crownstone dongle"
+    port.vid = None
+    port.pid = None
+
+    return port
+
+
 def create_mocked_entry_data_conf(email: str, password: str):
     """Set a result for the entry data for comparison."""
     mock_data: dict[str, str | None] = {}
@@ -262,7 +285,7 @@ async def test_successful_login_no_usb(
 
 async def test_successful_login_with_usb(
     crownstone_setup: MockFixture,
-    pyserial_comports: MockFixture,
+    pyserial_comports_none_types: MockFixture,
     usb_path: MockFixture,
     hass: HomeAssistant,
 ):
@@ -282,17 +305,18 @@ async def test_successful_login_with_usb(
     # should show usb form
     assert result["type"] == data_entry_flow.RESULT_TYPE_FORM
     assert result["step_id"] == "usb_config"
-    assert pyserial_comports.call_count == 1
+    assert pyserial_comports_none_types.call_count == 1
 
-    # create a mocked port
-    port = get_mocked_com_port()
+    # create a mocked port which should be in
+    # the list returned from list_ports_as_str, from .helpers
+    port = get_mocked_com_port_none_types()
     port_select = usb.human_readable_device_name(
         port.device,
         port.serial_number,
         port.manufacturer,
         port.description,
-        f"{hex(port.vid)[2:]:0>4}".upper(),
-        f"{hex(port.pid)[2:]:0>4}".upper(),
+        port.vid,
+        port.pid,
     )
 
     # select a port from the list
@@ -301,7 +325,7 @@ async def test_successful_login_with_usb(
     )
     assert result["type"] == data_entry_flow.RESULT_TYPE_FORM
     assert result["step_id"] == "usb_sphere_config"
-    assert pyserial_comports.call_count == 2
+    assert pyserial_comports_none_types.call_count == 2
     assert usb_path.call_count == 1
 
     # select a sphere
@@ -406,7 +430,8 @@ async def test_options_flow_setup_usb(
     assert result["step_id"] == "usb_config"
     assert pyserial_comports.call_count == 1
 
-    # create a mocked port
+    # create a mocked port which should be in
+    # the list returned from list_ports_as_str, from .helpers
     port = get_mocked_com_port()
     port_select = usb.human_readable_device_name(
         port.device,