diff --git a/comtypes/test/test_portabledevice.py b/comtypes/test/test_portabledevice.py
new file mode 100644
index 00000000..75496aa2
--- /dev/null
+++ b/comtypes/test/test_portabledevice.py
@@ -0,0 +1,146 @@
+ # so we don't crash when the generated files don't exist
+from __future__ import annotations
+
+from ctypes import (POINTER, _Pointer, pointer, cast,
+                    c_uint32, c_uint16, c_int8, c_ulong, c_wchar_p)
+from typing import Optional
+import unittest as ut
+
+import comtypes
+import comtypes.client
+
+comtypes.client.GetModule("portabledeviceapi.dll")
+import comtypes.gen.PortableDeviceApiLib as port_api
+
+comtypes.client.GetModule("portabledevicetypes.dll")
+import comtypes.gen.PortableDeviceTypesLib as port_types
+
+
+def newGuid(*args: int) -> comtypes.GUID:
+    guid = comtypes.GUID()
+    guid.Data1 = c_uint32(args[0])
+    guid.Data2 = c_uint16(args[1])
+    guid.Data3 = c_uint16(args[2])
+    for i in range(8):
+        guid.Data4[i] = c_int8(args[3 + i])
+    return guid
+
+
+def PropertyKey(*args: int) -> _Pointer[port_api._tagpropertykey]:
+    assert len(args) == 12
+    assert all(isinstance(x, int) for x in args)
+    propkey = port_api._tagpropertykey()
+    propkey.fmtid = newGuid(*args[0:11])
+    propkey.pid = c_ulong(args[11])
+    return pointer(propkey)
+
+
+class Test_IPortableDevice(ut.TestCase):
+    # To avoid damaging or changing the environment, do not CREATE, DELETE or UPDATE!
+    # Do READ only!
+    def setUp(self):
+        info = comtypes.client.CreateObject(
+            port_types.PortableDeviceValues().IPersist_GetClassID(),
+            clsctx=comtypes.CLSCTX_INPROC_SERVER,
+            interface=port_types.IPortableDeviceValues,
+        )
+        mng = comtypes.client.CreateObject(
+            port_api.PortableDeviceManager().IPersist_GetClassID(),
+            clsctx=comtypes.CLSCTX_INPROC_SERVER,
+            interface=port_api.IPortableDeviceManager,
+        )
+        p_id_cnt = pointer(c_ulong())
+        mng.GetDevices(POINTER(c_wchar_p)(), p_id_cnt)
+        if p_id_cnt.contents.value == 0:
+            self.skipTest("There is no portable device in the environment.")
+        dev_ids = (c_wchar_p * p_id_cnt.contents.value)()
+        mng.GetDevices(cast(dev_ids, POINTER(c_wchar_p)), p_id_cnt)
+        self.device = comtypes.client.CreateObject(
+            port_api.PortableDevice().IPersist_GetClassID(),
+            clsctx=comtypes.CLSCTX_INPROC_SERVER,
+            interface=port_api.IPortableDevice,
+        )
+        self.device.Open(list(dev_ids)[0], info)
+
+    def test_EnumObjects(self):
+        WPD_OBJECT_NAME = PropertyKey(
+            0xEF6B490D, 0x5CD8, 0x437A, 0xAF, 0xFC, 0xDA, 0x8B, 0x60, 0xEE, 0x4A, 0x3C, 4)
+        WPD_OBJECT_CONTENT_TYPE = PropertyKey(
+            0xEF6B490D, 0x5CD8, 0x437A, 0xAF, 0xFC, 0xDA, 0x8B, 0x60, 0xEE, 0x4A, 0x3C, 7)
+        WPD_OBJECT_SIZE = PropertyKey(
+            0xEF6B490D, 0x5CD8, 0x437A, 0xAF, 0xFC, 0xDA, 0x8B, 0x60, 0xEE, 0x4A, 0x3C, 11)
+        WPD_OBJECT_ORIGINAL_FILE_NAME = PropertyKey(
+            0xEF6B490D, 0x5CD8, 0x437A, 0xAF, 0xFC, 0xDA, 0x8B, 0x60, 0xEE, 0x4A, 0x3C, 12)
+        WPD_OBJECT_PARENT_ID = PropertyKey(
+            0xEF6B490D, 0x5CD8, 0x437A, 0xAF, 0xFC, 0xDA, 0x8B, 0x60, 0xEE, 0x4A, 0x3C, 3)
+        folderType = newGuid(0x27E2E392, 0xA111, 0x48E0,
+                             0xAB, 0x0C, 0xE1, 0x77, 0x05, 0xA0, 0x5F, 0x85)
+        functionalType = newGuid(
+            0x99ED0160, 0x17FF, 0x4C44, 0x9D, 0x98, 0x1D, 0x7A, 0x6F, 0x94, 0x19, 0x21)
+
+        content = self.device.Content()
+        properties = content.Properties()
+        propertiesToRead = comtypes.client.CreateObject(
+            port_types.PortableDeviceKeyCollection,
+            clsctx=comtypes.CLSCTX_INPROC_SERVER,
+            interface=port_api.IPortableDeviceKeyCollection,
+        )
+        propertiesToRead.Add(WPD_OBJECT_NAME)
+        propertiesToRead.Add(WPD_OBJECT_CONTENT_TYPE)
+
+        def findDir(curObjectID, level: int) -> Optional[str]:
+            # print(contentID)
+            if level < 0:
+                return None
+            values = properties.GetValues(curObjectID, propertiesToRead)
+            contenttype = values.GetGuidValue(WPD_OBJECT_CONTENT_TYPE)
+            is_folder = contenttype in [folderType, functionalType]
+            print(
+                f"{values.GetStringValue(WPD_OBJECT_NAME)} ({'folder' if is_folder else 'file'})")
+            if is_folder:
+                if level == 0:
+                    return curObjectID
+                # traverse into the children
+                enumobj = content.EnumObjects(c_ulong(0), curObjectID, None)
+                for x in enumobj:
+                    objId = findDir(x, level-1)
+                    if objId:
+                        return objId
+                return None  # not in this part of the tree
+            else:
+                return None
+
+        # find a directory 2 levels deep, because you can't write on the top ones
+        parentId = findDir("DEVICE", 2)
+        if not parentId:
+            self.fail("Could not find the parent path on the device")
+
+        buffer = "Text file content".encode("utf-8")
+        pdv = comtypes.client.CreateObject(
+            port_types.PortableDeviceValues,
+            clsctx=comtypes.CLSCTX_INPROC_SERVER,
+            interface=port_api.IPortableDeviceValues,
+        )
+        pdv.SetStringValue(WPD_OBJECT_PARENT_ID, parentId)
+        pdv.SetUnsignedLargeIntegerValue(WPD_OBJECT_SIZE, len(buffer))
+        pdv.SetStringValue(WPD_OBJECT_ORIGINAL_FILE_NAME, "testfile.txt")
+        pdv.SetStringValue(WPD_OBJECT_NAME, "testfile.txt")
+
+        optimalTransferSizeBytes = pointer(c_ulong(0))
+        (
+            fileStream,
+            optimalTransferSizeBytes,
+            _,
+        ) = content.CreateObjectWithPropertiesAndData(
+            pdv,
+            optimalTransferSizeBytes,
+            POINTER(c_wchar_p)(),
+        )
+        # here: optional calls to fileStream.RemoteWrite(), fileStream.Commit()
+
+        # WARNING: It seems like this does not actually create a file unless the file stream is commited,
+        # though I can't promise with certainty that this is the case on all portable devices.
+
+
+if __name__ == "__main__":
+    ut.main()