... ;6. Unique 3-level surge protection design for High voltage, Low voltage, and static;7. Power supply with AC 220V, DC ... -48V, 24V, 12V, 6V, 5V available, and low power consumption;8. Stand-alone unit and 1U/2U/4U ... ;10. Specially designed matching circuit of optical module, with low heat emission;11. With TDM, ADM, and CWDM techniques, especially applicable for ...