An adapter module including an adapter and a power cord is provided. The adapter includes a first interface, at least a second interface coupled with at least a load, an identifying circuit having a sensing switch configured at the first interface, a controller, and a detecting circuit. The first interface is provided for inserting by a connector of the power cord. The sensing switch changes its on/off state depending on whether the first connector provides a trigger. A first message is generated if the first connector provides the trigger. The controller is coupled to the identifying circuit and receives the first message. The detecting circuit is coupled between the first interface and the second interface for detecting a power parameter value, and provides a second message to the controller. The controller sends a warning message according to the first message and the second message.