- HP All-in-One Printer Manual

4 Printer description Q2431-90912
Model and serial numbers
The model number and printer serial number are listed on an identification label located under
the top cover on the right side of the printer. The model number is alphanumeric, such as
Q2431A for the HP LaserJet 4200/4300 products.
The serial number contains information about the country/region of origin, the revision level, the
production code, and the production number of the printer. An example of a serial number is
USBB123456.
The label also contains power rating and regulatory information as shown in figure 1.
Figure 1. Sample model and serial number label