diff --git a/ereuse_devicehub/resources/device/models.py b/ereuse_devicehub/resources/device/models.py
index 61e8cae7..a983643b 100644
--- a/ereuse_devicehub/resources/device/models.py
+++ b/ereuse_devicehub/resources/device/models.py
@@ -747,13 +747,13 @@ class Device(Thing):
 
     def set_hid(self):
         """
-        # product_vendor,
-        # product_family,
-        # product_chassis,
-        # product_number,
+        # product_vendor, is a manufacturer
+        # product_family, is a model but from dmidecode
+        # product_chassis, is a type of chassis
+        # product_number, is a ??
         # product_version,
         # product_sku,
-        # product_serial,
+        # product_serial, is a serial number
         # product_uuid,
         # board_vendor,
         # board_number,
@@ -762,6 +762,8 @@ class Device(Thing):
         """
         with suppress(TypeError):
             family = (self.family or '').replace(' ', '_')
+            model = ((self.model or '').replace(' ', '_'),)
+            model = model or family
             chassis = self.type
             if hasattr(self, 'chassis'):
                 chassis = self.chassis and self.chassis.name or ''
@@ -792,12 +794,11 @@ class Device(Thing):
             self.hid = '-'.join(
                 [
                     (self.manufacturer or '').replace(' ', '_'),
-                    family,
+                    model,
                     chassis,
-                    (self.model or '').replace(' ', '_'),
+                    self.serial_number,
                     version,
                     sku,
-                    self.serial_number,
                     system_uuid,
                     board_manufacturer,
                     board_model,
diff --git a/ereuse_devicehub/resources/device/schemas.py b/ereuse_devicehub/resources/device/schemas.py
index 76a1fee2..604da213 100644
--- a/ereuse_devicehub/resources/device/schemas.py
+++ b/ereuse_devicehub/resources/device/schemas.py
@@ -208,6 +208,21 @@ class Computer(Device):
     receiver_id = UUID(data_key='receiverID')
     system_uuid = UUID(required=False)
 
+    @post_load
+    def validate_hid(self, data):
+        """Validates than exist model manufacturer and system_uuid."""
+
+        minimum = [
+            data['manufacturer'],
+            data['model'],
+            data['system_uuid'],
+        ]
+
+        if not all(minimum):
+            txt = 'You can not register one device with out minimum datas, '
+            txt += 'you can to do one placeholder.'
+            raise ValidationError(txt)
+
 
 class Desktop(Computer):
     __doc__ = m.Desktop.__doc__