The CIM_Container association represents the relationship between a contained and a containing physical element. A containing object must be a physical package.
'A free-form string representing the positioning of the PhysicalElement within the PhysicalPackage. Information relative to stationary elements in the Container (for example, 'second drive bay from the top'), angles, altitudes and other data may be recorded in this property. This string could supplement or be used in place of instantiating the CIM_Location object.'
'The CIM_Container association represents the relationship between a contained and a containing physical element. A containing object must be a physical package.'