diff --git a/api/icsneolegacy/dllhelper/icsneo40DLLAPI.cpp b/api/icsneolegacy/dllhelper/icsneo40DLLAPI.cpp
index e7cf697..dafea23 100644
--- a/api/icsneolegacy/dllhelper/icsneo40DLLAPI.cpp
+++ b/api/icsneolegacy/dllhelper/icsneo40DLLAPI.cpp
@@ -5,6 +5,7 @@
 //Basic Functions
 FINDNEODEVICES icsneoFindNeoDevices;
 OPENNEODEVICE icsneoOpenNeoDevice;
+OPENDEVICE icsneoOpenDevice;
 CLOSEPORT icsneoClosePort;
 FREEOBJECT icsneoFreeObject;
 ////OPENPORTEX icsneoOpenPortEx;
@@ -137,6 +138,7 @@ bool LoadDLLAPI(HINSTANCE &hAPIDLL)
 
 	icsneoFindNeoDevices =    (FINDNEODEVICES) GetProcAddress(hAPIDLL,              "icsneoFindNeoDevices");
 	icsneoOpenNeoDevice =     (OPENNEODEVICE) GetProcAddress(hAPIDLL,               "icsneoOpenNeoDevice");
+	icsneoOpenDevice =     (OPENDEVICE) GetProcAddress(hAPIDLL,               "icsneoOpenDevice");
 	icsneoClosePort =         (CLOSEPORT) GetProcAddress(hAPIDLL,                   "icsneoClosePort");	
 	icsneoFreeObject =        (FREEOBJECT) GetProcAddress(hAPIDLL,                  "icsneoFreeObject");
 ////    icsneoOpenPortEx =        (OPENPORTEX) GetProcAddress(hAPIDLL,                  "icsneoOpenPortEx");
@@ -204,7 +206,7 @@ bool LoadDLLAPI(HINSTANCE &hAPIDLL)
 
 	icsneoEnableDOIPLine = (ENABLEDOIPACTIVATIONLINE)GetProcAddress(hAPIDLL, "icsneoEnableDOIPLine");
 
-    if(!icsneoFindNeoDevices || !icsneoOpenNeoDevice || !icsneoClosePort || !icsneoFreeObject ||
+    if(!icsneoFindNeoDevices || !icsneoOpenNeoDevice || !icsneoOpenDevice || !icsneoClosePort || !icsneoFreeObject ||
 	   !icsneoTxMessages || !icsneoGetMessages || !icsneoWaitForRxMessagesWithTimeOut ||
        !icsneoGetTimeStampForMsg || !icsneoEnableNetworkRXQueue || !icsneoGetISO15765Status || !icsneoTxMessagesEx ||
        !icsneoSetISO15765RxParameters || !icsneoGetConfiguration || !icsneoSendConfiguration ||
diff --git a/api/icsneolegacy/dllhelper/icsneo40DLLAPI.h b/api/icsneolegacy/dllhelper/icsneo40DLLAPI.h
index aa2b80c..4bed6e0 100644
--- a/api/icsneolegacy/dllhelper/icsneo40DLLAPI.h
+++ b/api/icsneolegacy/dllhelper/icsneo40DLLAPI.h
@@ -11,6 +11,7 @@ void UnloadDLLAPI(HINSTANCE &hAPIDLL);
 //Basic Functions
 typedef int  (__stdcall *FINDNEODEVICES)(unsigned long DeviceTypes, NeoDevice *pNeoDevice, int *pNumDevices);
 typedef int  (__stdcall *OPENNEODEVICE)(NeoDevice *pNeoDevice, void * hObject, unsigned char *bNetworkIDs, int bConfigRead, int bSyncToPC);
+typedef int  (__stdcall *OPENDEVICE)(NeoDeviceEx* pNeoDeviceEx, void** hObject, unsigned char* bNetworkIDs,	int bConfigRead, int iOptions, OptionsOpenNeoEx* stOptionsOpenNeoEx, unsigned long reserved);
 typedef int  (__stdcall *CLOSEPORT)(void * hObject, int *pNumberOfErrors);
 typedef void (__stdcall *FREEOBJECT)(void * hObject);
 typedef int  (__stdcall *OPENPORTEX)(void * lPortNumber, int lPortType, int lDriverType, int lIPAddressMSB, int lIPAddressLSBOrBaudRate,
@@ -115,6 +116,7 @@ typedef int  (__stdcall *SCRIPTWRITEISO15765TXMESSAGE)(void * hObject, unsigned
 //Basic Functions
 extern FINDNEODEVICES icsneoFindNeoDevices;
 extern OPENNEODEVICE icsneoOpenNeoDevice;
+extern OPENDEVICE icsneoOpenDevice;
 extern CLOSEPORT icsneoClosePort;
 extern FREEOBJECT icsneoFreeObject;
 extern SERIALNUMBERTOSTRING icsneoSerialNumberToString;
diff --git a/api/icsneolegacy/icsneolegacy.cpp b/api/icsneolegacy/icsneolegacy.cpp
index 526f26c..d1ebbef 100644
--- a/api/icsneolegacy/icsneolegacy.cpp
+++ b/api/icsneolegacy/icsneolegacy.cpp
@@ -620,6 +620,35 @@ int LegacyDLLExport icsneoOpenNeoDevice(NeoDevice *pNeoDevice, void **hObject, u
 	return icsneo_setPollingMessageLimit(device, 20000) && icsneo_enableMessagePolling(device) && icsneo_goOnline(device);
 }
 
+int LegacyDLLExport icsneoOpenDevice(
+	NeoDeviceEx* pNeoDeviceEx,
+	void** hObject,
+	unsigned char* bNetworkIDs,
+	int bConfigRead,
+	int iOptions,
+	OptionsOpenNeoEx* stOptionsOpenNeoEx,
+	unsigned long reserved)
+{
+	if (pNeoDeviceEx == nullptr || hObject == nullptr)
+		return false;
+
+	neodevice_t* device;
+	try
+	{
+		device = &neodevices.at(uint64_t(pNeoDeviceEx->neoDevice.Handle) << 32 | pNeoDeviceEx->neoDevice.SerialNumber);
+	}
+	catch (const std::out_of_range&)
+	{
+		return false;
+	}
+
+	*hObject = device;
+	if(!icsneo_openDevice(device))
+		return false;
+	
+	return icsneo_setPollingMessageLimit(device, 20000) && icsneo_enableMessagePolling(device) && icsneo_goOnline(device);
+}
+
 int LegacyDLLExport icsneoClosePort(void *hObject, int *pNumberOfErrors)
 {
 	if (!icsneoValidateHObject(hObject))
diff --git a/include/icsneo/icsneolegacy.h b/include/icsneo/icsneolegacy.h
index 78af46b..3988382 100644
--- a/include/icsneo/icsneolegacy.h
+++ b/include/icsneo/icsneolegacy.h
@@ -23,6 +23,7 @@ extern "C" {
 extern int LegacyDLLExport icsneoFindDevices(NeoDeviceEx* pNeoDeviceEx, int* pNumDevices, unsigned int* DeviceTypes, unsigned int numDeviceTypes,POptionsFindNeoEx* pOptionsNeoEx, unsigned int* reserved);
 extern int LegacyDLLExport icsneoFindNeoDevices(unsigned long DeviceTypes, NeoDevice* pNeoDevice, int* pNumDevices);
 extern int LegacyDLLExport icsneoOpenNeoDevice(NeoDevice* pNeoDevice, void** hObject, unsigned char* bNetworkIDs, int bConfigRead, int bSyncToPC);
+extern int LegacyDLLExport icsneoOpenDevice(NeoDeviceEx* pNeoDeviceEx, void** hObject, unsigned char* bNetworkIDs,	int bConfigRead, int iOptions, OptionsOpenNeoEx* stOptionsOpenNeoEx, unsigned long reserved);
 extern int LegacyDLLExport icsneoClosePort(void* hObject, int* pNumberOfErrors);
 extern void LegacyDLLExport icsneoFreeObject(void* hObject);
 extern int LegacyDLLExport icsneoOpenDevice(NeoDeviceEx* pNeoDeviceEx, void** hObject, unsigned char* bNetworkIDs, int bConfigRead, int iOptions, OptionsOpenNeoEx* stOptionsOpenNeoEx, unsigned long reserved);