HP Color LaserJet 4600 Printer series - Manual (Page 226)

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Note Single in-line memory modules (SIMMs) used on previous HP LaserJet
printers are not compatible with the printer.
Note To order DIMMs, see Supplies and accessories .
Before ordering additional memory, see how much is currently
installed by printing a configuration page.
Printing a configuration page
1. Press ✔ to enter the MENUS .
2. Press  to highlight INFORMATION .
3. Press ✔ to select INFORMATION .
4. Press  to highlight PRINT CONFIGURATION .
5. Press ✔ to print the configuration page.