98Optional Paper Tray(6429897) BAn optional Lower Tray can be installed, andit can hold up to 250 sheets of 20 lb (80 g/m2 )paper.When an optional Lower Tray is installed, themachine can hold up to 550 sheets of plainpaper.For setup, see the User’s Guide that we havesupplied with the lower tray unit.Memory Board BThis machine has 32 MB of standard memoryand one slot for optional memory expansion.You can expand the memory up to 544 MB byinstalling dual in-line memory modules(DIMMs). When you add the optionalmemory, it increases the performance forboth copier and printer operations.DIMM types BYou can install the following sizes of DIMM: 64 MB 128 MB 256 MB 512 MBNote• There might be some DIMMs that will notwork with the machine.• For more information, call Océ NationalDiagnostic Center.