NECB-S-M12G4-C2-D NECB-S-M12G5-C2 NECB-S-M12G5-C2-D NECB-S-M8G3-C2 NECB-S-M8G4-C2 NECB-S-M8G4-C2-D NEC-C1701C NECC254D NEC-C258C NECC2798