Oki C5800 - Manual (Page 100)

Installing upgrades> 100
17. Examine the first page of the menu map.
Near the top of the page, between the two horizontal lines,
you will see the current printer configuration. This list
contains the figure for total memory size.
This should indicate the total memory now installed.
A DDITIONAL PAPER TRAY
1. Switch the printer off and disconnect the AC power cable.
2. Place additional paper tray on desired location.
3. Observing safety rules for lifting and, using locating
guides, place printer on top of the additional paper tray.
4. Re-connect the AC power cable and switch the printer ON.