Continuous RIMM OMB C-RIMM Terminator Module allows you to use only one Rambus Memory Card 9578D. Simply install it in the empty RIMM slot and your computer will automatically detect it as a secondary module. Since there cannot be any unused RIMM slots on a motherboard, a C-RIMM is a special module used to fill any unused RIMM slots. It is basically a RIMM (Rambus Memory) module without any memory chips. Continuity RIMM is also know as C-RIMM.