MPO/APC Fixed Optical Attenuator is used to reduce optical-signal electric power in all channels of 40/100G Parallel Optic Transmission, and other equipment with using MPO interconnection. It makes network’s composition more concise than those of conservative way which is the connection method of attenuator independently in each channel, as downsizing the volume and saving time. This MPO Fixed Attenuator meets TIA/EIA 604-5. And IEC 61754-7 with compliance for RoHS