EA - IT Architecture V2 > Architecture Specification > Modeling IT Infrastructures > Describing Resource Architectures > Describing an Hardware
Describing an Hardware
*Non-IT Hardware can embed computers. Together with their embedded computers, they provide information and IS services. Examples: Connected Truck with Delivery Calendar Application and connected Drone with Online Payment Application. Hardware device can also provide hardware functionalities. Example: Connected fridge providing ordering functionalities and of course a freezing hardware functionality and connected drones fly and provide Online Payment.
Creating an Hardware 
To create an Hardware element from the Inventories navigation menu:
1. Select Hardware > Hardware.
The list of Hardware elements appears.
2. Click New.
The created hardware element appears in the list.
Creating a Hardware Assembly Structure Diagram 
To create a hardware assembly structure diagram:
1. Select the hardware you are interested in and click Create a diagram.
2. Select Structured diagram.
The Hardware Assembly Structure Diagram opens.
Using a hardware assembly structure diagram 
In a Hardware Assembly Structure Diagram, you can insert:
• IT servers and Computing devices, see Describing a Computing Device,
*An IT Server is an IT component providing a service to users connected via an IT network. This IT component can house databases and run applications.
*A computer device is a device which provides a computing service to the end-users directly. This computer can house databases and run applications. This is, for example, a workstation, a laptop or a smartphone.
• IoT Devices, see Describing a Computing Device,
*An IoT device is both a hardware device and a computing device which provides cvombined hardware and information services to the users using it directly. As a hardware device, it embeds sensors - e.g. accelerometer - which provide data to the embedded computing device. As a computing device, it can host data stores or run applications. Examples: smartwatch with GPS tracker, on-line surveillance video camera with live IP video feed, connected weighting scale with weight history management
• Hardware Component, see Describing an Hardware,
• Communication ports and network channels, see Describing technical communications.
• service and request points, see Describing the services communications.
• service interactions.
*A Service Interaction represents an interaction for service purpose between entities in a specific context inside or outside a company. These entities can be enterprise org-units, applications, activities or processes, as well as external org-units. The content of this interaction is described in a service interface.
*For more information about service interactions, see Describing the services communications.