It's in Inv_HW_Chassis
Use this chunk of SQL in your query.
Use this to call out only certain types that you know are Desktop/Laptop:
Case [Chassis Package Type]
WHEN 3 then 'Desktop'
When 7 then 'Desktop'
When 9 then 'Laptop'
ELSE 'Unknown'
END AS 'Desktop or Laptop',
Or use the standard definitions with no re-ranking as Desktop/Laptop/etc:
CASE [Chassis Package Type]
When 1 Then 'Other'
When 2 Then 'Unknown'
When 3 Then 'Desktop'
When 4 Then 'Low Profile Desktop'
When 5 Then 'Pizza Box'
When 6 Then 'Mini Tower'
When 7 Then 'Tower'
When 8 Then 'Portable'
When 9 Then 'Laptop'
When 10 Then 'Notebook'
When 11 Then 'Hand Held'
When 12 Then 'Docking Station'
When 13 Then 'All in One'
When 14 Then 'Sub Notebook'
When 15 Then 'Space-Saving'
When 16 Then 'Lunch Box'
When 17 Then 'Main System Chassis'
When 18 Then 'Expansion Chassis'
When 19 Then 'Sub Chassis'
When 20 Then 'Bus Expansion Chassis'
When 21 Then 'Peripheral Chassis'
When 22 Then 'Storage Chassis'
When 23 Then 'Rack Mount Chassis'
When 24 Then 'Sealed Case PC'
ELSE 'Other'
END AS 'Chassis Type'