Say you want to provision some settings only on all laptops in your corporate domain. The problemthough is, how do you identify which computers ones are laptops?

WMI Class win32_systemEnclosure has a property - ChassisTypes. ChassisTypes is 9 in a laptop.

Addtion based on reader feedback: ChassisTypes might not be 9 always, on some machines you'll see 8 (portable), 9 (notebook) as well. It is also a good idea to look for batteries as well using win32_battery class.

ChassisTypes

Data type: uint16 array

Access type: Read-only

Array of chassis types. This property is inherited from CIM_Chassis.

Details on win32_systemenclosure 

http://msdn.microsoft.com/en-us/library/aa394474(VS.85).aspx

Kapil Mathur [MSFT]