diff --git a/src/vbox/vbox_common.c b/src/vbox/vbox_common.c
index c1c7997e397fd9af965d742e3ec98288219cdabb..6309a17d1bb073e245513a020188e7fce01a404d 100644
--- a/src/vbox/vbox_common.c
+++ b/src/vbox/vbox_common.c
@@ -1563,15 +1563,13 @@ vboxAttachVideo(virDomainDefPtr def, IMachine *machine)
                 gVBoxAPI.UIMachine.SetAccelerate3DEnabled(machine,
                     def->videos[0]->accel->accel3d == VIR_TRISTATE_BOOL_YES);
             }
-            if (def->videos[0]->accel->accel2d &&
-                gVBoxAPI.accelerate2DVideo) {
+            if (def->videos[0]->accel->accel2d) {
                 gVBoxAPI.UIMachine.SetAccelerate2DVideoEnabled(machine,
                     def->videos[0]->accel->accel2d == VIR_TRISTATE_BOOL_YES);
             }
         } else {
             gVBoxAPI.UIMachine.SetAccelerate3DEnabled(machine, 0);
-            if (gVBoxAPI.accelerate2DVideo)
-                gVBoxAPI.UIMachine.SetAccelerate2DVideoEnabled(machine, 0);
+            gVBoxAPI.UIMachine.SetAccelerate2DVideoEnabled(machine, 0);
         }
     }
 }
@@ -3063,7 +3061,7 @@ vboxHostDeviceGetXMLDesc(vboxDriverPtr data, virDomainDefPtr def, IMachine *mach
 }
 
 static void
-vboxDumpIDEHDDsNew(virDomainDefPtr def, vboxDriverPtr data, IMachine *machine)
+vboxDumpIDEHDDs(virDomainDefPtr def, vboxDriverPtr data, IMachine *machine)
 {
     /* dump IDE hdds if present */
     vboxArray mediumAttachments = VBOX_ARRAY_INITIALIZER;
@@ -3073,9 +3071,6 @@ vboxDumpIDEHDDsNew(virDomainDefPtr def, vboxDriverPtr data, IMachine *machine)
     PRUint32 maxPortPerInst[StorageBus_Floppy + 1] = {};
     PRUint32 maxSlotPerPort[StorageBus_Floppy + 1] = {};
 
-    if (gVBoxAPI.oldMediumInterface)
-        VIR_WARN("This function may not work in current vbox version");
-
     def->ndisks = 0;
     gVBoxAPI.UArray.vboxArrayGet(&mediumAttachments, machine,
                                  gVBoxAPI.UArray.handleMachineGetMediumAttachments(machine));
@@ -3245,8 +3240,7 @@ vboxDumpVideo(virDomainDefPtr def, vboxDriverPtr data ATTRIBUTE_UNUSED,
     gVBoxAPI.UIMachine.GetVRAMSize(machine, &VRAMSize);
     gVBoxAPI.UIMachine.GetMonitorCount(machine, &monitorCount);
     gVBoxAPI.UIMachine.GetAccelerate3DEnabled(machine, &accelerate3DEnabled);
-    if (gVBoxAPI.accelerate2DVideo)
-        gVBoxAPI.UIMachine.GetAccelerate2DVideoEnabled(machine, &accelerate2DEnabled);
+    gVBoxAPI.UIMachine.GetAccelerate2DVideoEnabled(machine, &accelerate2DEnabled);
 
     def->videos[0]->type = VIR_DOMAIN_VIDEO_TYPE_VBOX;
     def->videos[0]->vram = VRAMSize * 1024;
@@ -3914,26 +3908,11 @@ static char *vboxDomainGetXMLDesc(virDomainPtr dom, unsigned int flags)
     if (vboxDumpDisplay(def, data, machine) < 0)
         goto cleanup;
 
-    /* As the medium interface changed from 3.0 to 3.1.
-     * There are two totally different implementations.
-     * The old one would be version specified, while the
-     * new one is using the vboxUniformedAPI and be put
-     * into the common code.
-     */
-    if (gVBoxAPI.oldMediumInterface)
-        gVBoxAPI.dumpIDEHDDsOld(def, data, machine);
-    else
-        vboxDumpIDEHDDsNew(def, data, machine);
+    vboxDumpIDEHDDs(def, data, machine);
 
     vboxDumpSharedFolders(def, data, machine);
     vboxDumpNetwork(def, data, machine, networkAdapterCount);
     vboxDumpAudio(def, data, machine);
-
-    if (gVBoxAPI.oldMediumInterface) {
-        gVBoxAPI.dumpDVD(def, data, machine);
-        gVBoxAPI.dumpFloppy(def, data, machine);
-    }
-
     vboxDumpSerial(def, data, machine, serialPortCount);
     vboxDumpParallel(def, data, machine, parallelPortCount);
 
@@ -4106,20 +4085,8 @@ static int vboxDomainAttachDeviceImpl(virDomainPtr dom,
     if (NS_SUCCEEDED(rc) && machine) {
         /* ret = -VIR_ERR_ARGUMENT_UNSUPPORTED means the current device don't support hotplug. */
         ret = -VIR_ERR_ARGUMENT_UNSUPPORTED;
-        if (dev->type == VIR_DOMAIN_DEVICE_DISK) {
-            if (gVBoxAPI.oldMediumInterface) {
-                const char *src = virDomainDiskGetSource(dev->data.disk);
-                int type = virDomainDiskGetType(dev->data.disk);
-
-                if (dev->data.disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM &&
-                    type == VIR_STORAGE_TYPE_FILE && src)
-                    ret = gVBoxAPI.attachDVD(data, machine, src);
-                else if (dev->data.disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY &&
-                         type == VIR_STORAGE_TYPE_FILE && src)
-                    ret = gVBoxAPI.attachFloppy(data, machine, src);
-            }
-        } else if (dev->type == VIR_DOMAIN_DEVICE_FS &&
-                   dev->data.fs->type == VIR_DOMAIN_FS_TYPE_MOUNT) {
+        if (dev->type == VIR_DOMAIN_DEVICE_FS &&
+            dev->data.fs->type == VIR_DOMAIN_FS_TYPE_MOUNT) {
             PRUnichar *nameUtf16;
             PRUnichar *hostPathUtf16;
             PRBool writable;
@@ -4237,24 +4204,7 @@ static int vboxDomainDetachDevice(virDomainPtr dom, const char *xml)
     if (NS_SUCCEEDED(rc) && machine) {
         /* ret = -VIR_ERR_ARGUMENT_UNSUPPORTED means the current device don't support hotplug. */
         ret = -VIR_ERR_ARGUMENT_UNSUPPORTED;
-        if (dev->type == VIR_DOMAIN_DEVICE_DISK) {
-            if (gVBoxAPI.oldMediumInterface) {
-                int type = virDomainDiskGetType(dev->data.disk);
-
-                if (dev->data.disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM) {
-                    if (type == VIR_STORAGE_TYPE_FILE) {
-                        ret = gVBoxAPI.detachDVD(machine);
-                    } else if (type == VIR_STORAGE_TYPE_BLOCK) {
-                    }
-                } else if (dev->data.disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY) {
-                    if (type == VIR_STORAGE_TYPE_FILE) {
-                        ret = gVBoxAPI.detachFloppy(machine);
-                    } else if (type == VIR_STORAGE_TYPE_BLOCK) {
-                    }
-                }
-            }
-        } else if (dev->type == VIR_DOMAIN_DEVICE_NET) {
-        } else if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV) {
+        if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV) {
             if (dev->data.hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS) {
                 if (dev->data.hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB) {
                 }
diff --git a/src/vbox/vbox_network.c b/src/vbox/vbox_network.c
index 0884b748769f26443fd044d875190596c12b2dd0..f004ec1edddf02378c7ddb5dfe1372924b3eaa5e 100644
--- a/src/vbox/vbox_network.c
+++ b/src/vbox/vbox_network.c
@@ -603,7 +603,7 @@ vboxNetworkUndefineDestroy(virNetworkPtr network, bool removeinterface)
     if (interfaceType != HostNetworkInterfaceType_HostOnly)
         goto cleanup;
 
-    if (gVBoxAPI.networkRemoveInterface && removeinterface) {
+    if (removeinterface) {
         vboxIIDUnion iid;
         IProgress *progress = NULL;
         nsresult rc;
diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c
index 25d237a31978cd793452dabea0666d5d04064848..302ef1c500cb37eee8386064c89573438c588a6c 100644
--- a/src/vbox/vbox_tmpl.c
+++ b/src/vbox/vbox_tmpl.c
@@ -413,14 +413,6 @@ _vboxDomainSnapshotRestore(virDomainPtr dom,
     return ret;
 }
 
-static void
-_detachDevices(vboxDriverPtr data ATTRIBUTE_UNUSED,
-               IMachine *machine ATTRIBUTE_UNUSED,
-               PRUnichar *hddcnameUtf16 ATTRIBUTE_UNUSED)
-{
-    vboxUnsupported();
-}
-
 static nsresult
 _unregisterMachine(vboxDriverPtr data, vboxIIDUnion *iidu, IMachine **machine)
 {
@@ -480,62 +472,6 @@ _deleteConfig(IMachine *machine)
     }
 }
 
-static void
-_dumpIDEHDDsOld(virDomainDefPtr def ATTRIBUTE_UNUSED,
-                vboxDriverPtr data ATTRIBUTE_UNUSED,
-                IMachine *machine ATTRIBUTE_UNUSED)
-{
-    vboxUnsupported();
-}
-
-static void
-_dumpDVD(virDomainDefPtr def ATTRIBUTE_UNUSED,
-         vboxDriverPtr data ATTRIBUTE_UNUSED,
-         IMachine *machine ATTRIBUTE_UNUSED)
-{
-    vboxUnsupported();
-}
-
-static int
-_attachDVD(vboxDriverPtr data ATTRIBUTE_UNUSED,
-           IMachine *machine ATTRIBUTE_UNUSED,
-           const char *src ATTRIBUTE_UNUSED)
-{
-    vboxUnsupported();
-    return 0;
-}
-
-static int
-_detachDVD(IMachine *machine ATTRIBUTE_UNUSED)
-{
-    vboxUnsupported();
-    return 0;
-}
-
-static void
-_dumpFloppy(virDomainDefPtr def ATTRIBUTE_UNUSED,
-            vboxDriverPtr data ATTRIBUTE_UNUSED,
-            IMachine *machine ATTRIBUTE_UNUSED)
-{
-    vboxUnsupported();
-}
-
-static int
-_attachFloppy(vboxDriverPtr data ATTRIBUTE_UNUSED,
-              IMachine *machine ATTRIBUTE_UNUSED,
-              const char *src ATTRIBUTE_UNUSED)
-{
-    vboxUnsupported();
-    return 0;
-}
-
-static int
-_detachFloppy(IMachine *machine ATTRIBUTE_UNUSED)
-{
-    vboxUnsupported();
-    return 0;
-}
-
 static int _pfnInitialize(vboxDriverPtr driver)
 {
     if (!(driver->pFuncs = g_pfnGetFunctions(VBOX_XPCOMC_VERSION)))
@@ -1095,15 +1031,15 @@ _machineSetAccelerate3DEnabled(IMachine *machine, PRBool accelerate3DEnabled)
 }
 
 static nsresult
-_machineGetAccelerate2DVideoEnabled(IMachine *machine ATTRIBUTE_UNUSED,
-                                    PRBool *accelerate2DVideoEnabled ATTRIBUTE_UNUSED)
+_machineGetAccelerate2DVideoEnabled(IMachine *machine,
+                                    PRBool *accelerate2DVideoEnabled)
 {
     return machine->vtbl->GetAccelerate2DVideoEnabled(machine, accelerate2DVideoEnabled);
 }
 
 static nsresult
-_machineSetAccelerate2DVideoEnabled(IMachine *machine ATTRIBUTE_UNUSED,
-                                    PRBool accelerate2DVideoEnabled ATTRIBUTE_UNUSED)
+_machineSetAccelerate2DVideoEnabled(IMachine *machine,
+                                    PRBool accelerate2DVideoEnabled)
 {
     return machine->vtbl->SetAccelerate2DVideoEnabled(machine, accelerate2DVideoEnabled);
 }
@@ -2662,17 +2598,9 @@ void NAME(InstallUniformedAPI)(vboxUniformedAPI *pVBoxAPI)
 {
     pVBoxAPI->APIVersion = VBOX_API_VERSION;
     pVBoxAPI->XPCOMCVersion = VBOX_XPCOMC_VERSION;
-    pVBoxAPI->detachDevices = _detachDevices;
     pVBoxAPI->unregisterMachine = _unregisterMachine;
     pVBoxAPI->deleteConfig = _deleteConfig;
     pVBoxAPI->vboxConvertState = _vboxConvertState;
-    pVBoxAPI->dumpIDEHDDsOld = _dumpIDEHDDsOld;
-    pVBoxAPI->dumpDVD = _dumpDVD;
-    pVBoxAPI->attachDVD = _attachDVD;
-    pVBoxAPI->detachDVD = _detachDVD;
-    pVBoxAPI->dumpFloppy = _dumpFloppy;
-    pVBoxAPI->attachFloppy = _attachFloppy;
-    pVBoxAPI->detachFloppy = _detachFloppy;
     pVBoxAPI->snapshotRestore = _vboxDomainSnapshotRestore;
     pVBoxAPI->UPFN = _UPFN;
     pVBoxAPI->UIID = _UIID;
@@ -2710,23 +2638,9 @@ void NAME(InstallUniformedAPI)(vboxUniformedAPI *pVBoxAPI)
     pVBoxAPI->chipsetType = 0;
 #endif /* VBOX_API_VERSION < 4001000 */
 
-#if VBOX_API_VERSION >= 3001000
-    pVBoxAPI->accelerate2DVideo = 1;
-    pVBoxAPI->oldMediumInterface = 0;
-#else /* VBOX_API_VERSION < 3001000 */
-    pVBoxAPI->accelerate2DVideo = 0;
-    pVBoxAPI->oldMediumInterface = 1;
-#endif /* VBOX_API_VERSION < 3001000 */
-
 #if VBOX_API_VERSION >= 4002000
     pVBoxAPI->vboxSnapshotRedefine = 1;
 #else /* VBOX_API_VERSION < 4002000 */
     pVBoxAPI->vboxSnapshotRedefine = 0;
 #endif /* VBOX_API_VERSION < 4002000 */
-
-#if VBOX_API_VERSION == 2002000
-    pVBoxAPI->networkRemoveInterface = 0;
-#else /* VBOX_API_VERSION > 2002000 */
-    pVBoxAPI->networkRemoveInterface = 1;
-#endif /* VBOX_API_VERSION > 2002000 */
 }
diff --git a/src/vbox/vbox_uniformed_api.h b/src/vbox/vbox_uniformed_api.h
index 9c9aff9549078057c6c658765d7c42e824bb358e..f26de27bec09172373c622e015be990485f133d5 100644
--- a/src/vbox/vbox_uniformed_api.h
+++ b/src/vbox/vbox_uniformed_api.h
@@ -533,18 +533,10 @@ typedef struct {
     uint32_t APIVersion;
     uint32_t XPCOMCVersion;
     /* vbox APIs */
-    void (*detachDevices)(vboxDriverPtr driver, IMachine *machine, PRUnichar *hddcnameUtf16);
     nsresult (*unregisterMachine)(vboxDriverPtr driver, vboxIIDUnion *iidu, IMachine **machine);
     void (*deleteConfig)(IMachine *machine);
     void (*vboxAttachDrivesOld)(virDomainDefPtr def, vboxDriverPtr driver, IMachine *machine);
     virDomainState (*vboxConvertState)(PRUint32 state);
-    void (*dumpIDEHDDsOld)(virDomainDefPtr def, vboxDriverPtr driver, IMachine *machine);
-    void (*dumpDVD)(virDomainDefPtr def, vboxDriverPtr driver, IMachine *machine);
-    int (*attachDVD)(vboxDriverPtr driver, IMachine *machine, const char *src);
-    int (*detachDVD)(IMachine *machine);
-    void (*dumpFloppy)(virDomainDefPtr def, vboxDriverPtr driver, IMachine *machine);
-    int (*attachFloppy)(vboxDriverPtr driver, IMachine *machine, const char *src);
-    int (*detachFloppy)(IMachine *machine);
     int (*snapshotRestore)(virDomainPtr dom, IMachine *machine, ISnapshot *snapshot);
     vboxUniformedPFN UPFN;
     vboxUniformedIID UIID;
@@ -577,10 +569,7 @@ typedef struct {
     uniformedMachineStateChecker machineStateChecker;
     /* vbox API features */
     bool chipsetType;
-    bool accelerate2DVideo;
-    bool oldMediumInterface;
     bool vboxSnapshotRedefine;
-    bool networkRemoveInterface;
 } vboxUniformedAPI;
 
 virDomainPtr vboxDomainLookupByUUID(virConnectPtr conn,