diff --git a/cyborg/agent/resource_tracker.py b/cyborg/agent/resource_tracker.py
index cb44051b..6cc420b2 100644
--- a/cyborg/agent/resource_tracker.py
+++ b/cyborg/agent/resource_tracker.py
@@ -36,7 +36,7 @@ DEPLOYABLE_VERSION = "1.0"
 
 # need to change the driver field name
 DEPLOYABLE_HOST_MAPS = {"assignable": "assignable",
-                        "pcie_address": "devices",
+                        "address": "devices",
                         "board": "product_id",
                         "type": "function",
                         "vendor": "vendor_id",
@@ -98,8 +98,8 @@ class ResourceTracker(object):
         deployables = self.conductor_api.deployable_get_by_host(
             context, self.host)
 
-        # NOTE(Shaohe Feng) when no "pcie_address" in deployable?
-        accls = dict([(v["pcie_address"], v) for v in deployables])
+        # NOTE(Shaohe Feng) when no "address" in deployable?
+        accls = dict([(v["address"], v) for v in deployables])
         accl_bdfs = set(accls.keys())
 
         # Firstly update
diff --git a/cyborg/api/controllers/v1/deployables.py b/cyborg/api/controllers/v1/deployables.py
index 7d8aa680..afb5e2cc 100644
--- a/cyborg/api/controllers/v1/deployables.py
+++ b/cyborg/api/controllers/v1/deployables.py
@@ -49,8 +49,8 @@ class Deployable(base.APIBase):
     root_uuid = types.uuid
     """The root UUID of the deployable"""
 
-    pcie_address = wtypes.text
-    """The pcie address of the deployable"""
+    address = wtypes.text
+    """The address(pci/mdev) of the deployable"""
 
     host = wtypes.text
     """The host on which the deployable is located"""
@@ -67,6 +67,9 @@ class Deployable(base.APIBase):
     type = wtypes.text
     """The type of the deployable"""
 
+    interface_type = wtypes.text
+    """The interface type of deployable"""
+
     assignable = types.boolean
     """Whether the deployable is assignable"""
 
@@ -119,7 +122,7 @@ class DeployablePatchType(types.JsonPatchType):
     @staticmethod
     def internal_attrs():
         defaults = types.JsonPatchType.internal_attrs()
-        return defaults + ['/pcie_address', '/host', '/type']
+        return defaults + ['/address', '/host', '/type']
 
 
 class DeployablesController(rest.RestController):
diff --git a/cyborg/db/sqlalchemy/alembic/versions/f50980397351_initial_migration.py b/cyborg/db/sqlalchemy/alembic/versions/f50980397351_initial_migration.py
index 9d250df8..890c6bb5 100644
--- a/cyborg/db/sqlalchemy/alembic/versions/f50980397351_initial_migration.py
+++ b/cyborg/db/sqlalchemy/alembic/versions/f50980397351_initial_migration.py
@@ -40,8 +40,8 @@ def upgrade():
         sa.Column('project_id', sa.String(length=36), nullable=True),
         sa.Column('user_id', sa.String(length=36), nullable=True),
         sa.Column('device_type', sa.Text(), nullable=False),
-        sa.Column('acc_type', sa.Text(), nullable=False),
-        sa.Column('acc_capability', sa.Text(), nullable=False),
+        sa.Column('acc_type', sa.Text(), nullable=True),
+        sa.Column('acc_capability', sa.Text(), nullable=True),
         sa.Column('vendor_id', sa.Text(), nullable=False),
         sa.Column('product_id', sa.Text(), nullable=False),
         sa.Column('remotable', sa.Integer(), nullable=False),
@@ -62,12 +62,13 @@ def upgrade():
                   sa.ForeignKey('deployables.uuid'), nullable=True),
         sa.Column('root_uuid', sa.String(length=36),
                   sa.ForeignKey('deployables.uuid'), nullable=True),
-        sa.Column('pcie_address', sa.Text(), nullable=False),
+        sa.Column('address', sa.Text(), nullable=False),
         sa.Column('host', sa.Text(), nullable=False),
         sa.Column('board', sa.Text(), nullable=False),
         sa.Column('vendor', sa.Text(), nullable=False),
         sa.Column('version', sa.Text(), nullable=False),
         sa.Column('type', sa.Text(), nullable=False),
+        sa.Column('interface_type', sa.Text(), nullable=False),
         sa.Column('assignable', sa.Boolean(), nullable=False),
         sa.Column('instance_uuid', sa.String(length=36), nullable=True),
         sa.Column('availability', sa.Text(), nullable=False),
diff --git a/cyborg/db/sqlalchemy/api.py b/cyborg/db/sqlalchemy/api.py
index 89953b4d..48635944 100644
--- a/cyborg/db/sqlalchemy/api.py
+++ b/cyborg/db/sqlalchemy/api.py
@@ -254,10 +254,11 @@ class Connection(api.Connection):
 
         exact_match_filter_names = ['uuid', 'name',
                                     'parent_uuid', 'root_uuid',
-                                    'pcie_address', 'host',
+                                    'address', 'host',
                                     'board', 'vendor', 'version',
-                                    'type', 'assignable', 'instance_uuid',
-                                    'availability', 'accelerator_id']
+                                    'type', 'interface_type', 'assignable',
+                                    'instance_uuid', 'availability',
+                                    'accelerator_id']
         attribute_filters = {}
         filters_copy = copy.deepcopy(filters)
         for key, value in filters_copy.iteritems():
@@ -399,10 +400,11 @@ class Connection(api.Connection):
 
         exact_match_filter_names = ['uuid', 'name',
                                     'parent_uuid', 'root_uuid',
-                                    'pcie_address', 'host',
+                                    'address', 'host',
                                     'board', 'vendor', 'version',
-                                    'type', 'assignable', 'instance_uuid',
-                                    'availability', 'accelerator_id']
+                                    'type', 'interface_type', 'assignable',
+                                    'instance_uuid', 'availability',
+                                    'accelerator_id']
 
         # Filter the query
         query_prefix = self._exact_deployable_filter(query_prefix,
diff --git a/cyborg/db/sqlalchemy/models.py b/cyborg/db/sqlalchemy/models.py
index 4c9c0829..842bdeb9 100644
--- a/cyborg/db/sqlalchemy/models.py
+++ b/cyborg/db/sqlalchemy/models.py
@@ -68,8 +68,8 @@ class Accelerator(Base):
     project_id = Column(String(36), nullable=True)
     user_id = Column(String(36), nullable=True)
     device_type = Column(String(255), nullable=False)
-    acc_type = Column(String(255), nullable=False)
-    acc_capability = Column(String(255), nullable=False)
+    acc_type = Column(String(255), nullable=True)
+    acc_capability = Column(String(255), nullable=True)
     vendor_id = Column(String(255), nullable=False)
     product_id = Column(String(255), nullable=False)
     remotable = Column(Integer, nullable=False)
@@ -94,12 +94,13 @@ class Deployable(Base):
                          ForeignKey('deployables.uuid'), nullable=True)
     root_uuid = Column(String(36),
                        ForeignKey('deployables.uuid'), nullable=True)
-    pcie_address = Column(String(255), nullable=False)
+    address = Column(String(255), nullable=False)
     host = Column(String(255), nullable=False)
     board = Column(String(255), nullable=False)
     vendor = Column(String(255), nullable=False)
     version = Column(String(255), nullable=False)
     type = Column(String(255), nullable=False)
+    interface_type = Column(String(255), nullable=False)
     assignable = Column(Boolean, nullable=False)
     instance_uuid = Column(String(36), nullable=True)
     availability = Column(String(255), nullable=False)
diff --git a/cyborg/objects/accelerator.py b/cyborg/objects/accelerator.py
index 6c6eb2e2..42ac7066 100644
--- a/cyborg/objects/accelerator.py
+++ b/cyborg/objects/accelerator.py
@@ -40,9 +40,9 @@ class Accelerator(base.CyborgObject, object_base.VersionedObjectDictCompat):
         'user_id': object_fields.UUIDField(nullable=True),
         'device_type': object_fields.StringField(nullable=False),
         # The type of the accelerator device, e.g GPU, FPGA, ...
-        'acc_type': object_fields.StringField(nullable=False),
+        'acc_type': object_fields.StringField(nullable=True),
         # acc_type defines the usage of the accelerator, e.g Crypto
-        'acc_capability': object_fields.StringField(nullable=False),
+        'acc_capability': object_fields.StringField(nullable=True),
         # acc_capability defines the specific capability, e.g AES
         'vendor_id': object_fields.StringField(nullable=False),
         # vendor_id refers to ids like NVIDIA, XILINX, INTEL,...
diff --git a/cyborg/objects/deployable.py b/cyborg/objects/deployable.py
index 645fc5df..bf7dbed6 100644
--- a/cyborg/objects/deployable.py
+++ b/cyborg/objects/deployable.py
@@ -42,14 +42,17 @@ class Deployable(base.CyborgObject, object_base.VersionedObjectDictCompat):
         # parent_uuid refers to the id of the VF's parent node
         'root_uuid': object_fields.UUIDField(nullable=True),
         # root_uuid refers to the id of the VF's root which has to be a PF
-        'pcie_address': object_fields.StringField(nullable=False),
+        'address': object_fields.StringField(nullable=False),
+        # if interface_type is pci(/mdev), address is the pci_address(/path)
         'host': object_fields.StringField(nullable=False),
         'board': object_fields.StringField(nullable=False),
         # board refers to a specific acc board type, e.g P100 GPU card
         'vendor': object_fields.StringField(nullable=False),
         'version': object_fields.StringField(nullable=False),
         'type': object_fields.StringField(nullable=False),
-        # similar to the acc_type in accelerator.py
+        # type of deployable, e.g, pf/vf/*f
+        'interface_type': object_fields.StringField(nullable=False),
+        # interface to hypervisor(libvirt), e.g, pci/mdev...
         'assignable': object_fields.BooleanField(nullable=False),
         # identify if an accelerator is in use
         'instance_uuid': object_fields.UUIDField(nullable=True),
diff --git a/cyborg/tests/unit/fake_deployable.py b/cyborg/tests/unit/fake_deployable.py
index c86b5b39..1525bf4d 100644
--- a/cyborg/tests/unit/fake_deployable.py
+++ b/cyborg/tests/unit/fake_deployable.py
@@ -30,12 +30,13 @@ def fake_db_deployable(**updates):
         'name': 'dp_name',
         'parent_uuid': None,
         'root_uuid': root_uuid,
-        'pcie_address': '00:7f:0b.2',
+        'address': '00:7f:0b.2',
         'host': 'host_name',
         'board': 'KU115',
         'vendor': 'Xilinx',
         'version': '1.0',
         'type': 'pf',
+        'interface_type': 'pci',
         'assignable': True,
         'instance_uuid': None,
         'availability': 'Available',
diff --git a/cyborg/tests/unit/fake_physical_function.py b/cyborg/tests/unit/fake_physical_function.py
index b32145ef..52cb54ca 100644
--- a/cyborg/tests/unit/fake_physical_function.py
+++ b/cyborg/tests/unit/fake_physical_function.py
@@ -31,12 +31,13 @@ def fake_db_physical_function(**updates):
         'name': 'dp_name',
         'parent_uuid': None,
         'root_uuid': root_uuid,
-        'pcie_address': '00:7f:0b.2',
+        'address': '00:7f:0b.2',
         'host': 'host_name',
         'board': 'KU115',
         'vendor': 'Xilinx',
         'version': '1.0',
         'type': 'pf',
+        'interface_type': 'pci',
         'assignable': True,
         'instance_uuid': None,
         'availability': 'Available',
diff --git a/cyborg/tests/unit/fake_virtual_function.py b/cyborg/tests/unit/fake_virtual_function.py
index e6f45df2..898c776f 100644
--- a/cyborg/tests/unit/fake_virtual_function.py
+++ b/cyborg/tests/unit/fake_virtual_function.py
@@ -31,12 +31,13 @@ def fake_db_virtual_function(**updates):
         'name': 'dp_name',
         'parent_uuid': None,
         'root_uuid': root_uuid,
-        'pcie_address': '00:7f:bb.2',
+        'address': '00:7f:bb.2',
         'host': 'host_name',
         'board': 'KU115',
         'vendor': 'Xilinx',
         'version': '1.0',
         'type': 'vf',
+        'interface_type': 'pci',
         'assignable': True,
         'instance_uuid': None,
         'availability': 'Available',