Oki MPS930b User Manual page 199

4. Turn screws on controller assembly counter clockwise until
loose and gently pull cover towards you to remove from
printer.
5. Carefully insert a DDR Memory module which is compatible
with your printer into the slot as shown below. When properly
seated, gently push down on the module until the side braces
close onto the ends of the RAM module.
The Compact Flash is inserted in a similar manner.
6. Reinstall the side covers in reverse order.
7. Connect the power cord to the wall outlet.
8. Turn the printer power switch to the ON [I] position.
MPS930b User's Guide> 199