What is fpu number on printer?

HP Printers - How Do I Find My Model Number or Product Number? The FPU ( Floating Product Unit) number you are seeing near the serial. K7C85A and M9C7A are examples of printer product numbers. on your printer and not the FPU No. This video reviews the method :-- WPS PIN number can be printed easily from your HP Printer. Learn how to check your printer and its labels to find your printer name and number. What is WPS Pin? WPS stands for the “Wi-Fi Protected Setup” if we say in technical language.