HP Color LaserJet CM3530 Multifunction Printer series - Manual (Page 28)

Callout Area on the screen Information or capability that the area provides
2 Usage Totals (equivalent) Indicates the types of pages that have been printed, the number of single-
sided pages that have been printed, the number of duplexed pages that
have been printed, and the total number of pages that have been printed.
3 Units A unit is equal to a standard A4-size (letter-size) page. All other page sizes
are referenced in relation to this standard size. An A4-size (letter-size) page
printed on both sides counts as 2 units.
4 Print Modes & Paper Path Usage
(actual) Indicates the different print modes that have been used for color and
monochrome (black-and-white) print jobs.
Table 2-5 Usage Page (continued)
16 Chapter 2 Viewing product status from the HP EWS Information screens ENWW