HP DM4 - Manual (Page 21)

3 Illustrated parts catalog
Serial number location
When ordering parts or requesting information, provide the computer serial number and model
number located in the battery bay of the computer.
● Product name (1). This is the product name affixed to the front of the computer.
● Serial number (s/n) (2). This is an alphanumeric identifier that is unique to each product.
● Part number/Product number (p/n) (3). This number provides specific information about the
product's hardware components. The part number helps a service technician to determine what
components and parts are needed.
● Warranty period (4). This number describes the duration (in years) of the warranty period for the
computer.
● Model description (5). This is the alphanumeric identifier used to locate documents, drivers, and
support for the computer.
Serial number location 13