HP L1950 19-inch LCD Monitor - Manual (Page 26)

Locating the Rating Labels
The rating labels on the monitor provide the spare part number, product number, and serial number.
You may need these numbers when contacting HP about the monitor model. The rating labels are
located on the rear panel of the monitor display head.
Figure 3-21 Locating the Rating Labels
20 Chapter 3 Setting Up the Monitor