Identifies the type of device or container. This could be a chassis, module, a standalone box etc. A vendor's authoritative identification of this device or container. By convention, this value is allocated within the SMI enterprises subtree(1.3.6.1.4.1), and provides an easy and unambiguous means for determining `what kind of box' is being managed. If this information is not present or unknown, its value should be set to the contUnknownTypeID, which is defined below.