VOA-M-a-c-da: Operating Wavelength, a=1310 for 1310nm, a=1315 for 1310 and 1550nm dual wavelengths, etc. C: Variable Optical ... , etc. D: Connector Type, d=FA for FC/APC, d=SU for SC/UPC, d=N for no connectors, etc. Available Options: Connector Type ... Loss (dB)< 1.0** Return Loss (dB)> 50 for singlemode and PM, > 30 for multimodeOptical Power Handling (W)< 1Attenuation Range (dB)> 60 ...