| Part Number  | Data Rate (Gbps) | Reach (km) | Wavelength (nm) | Source | Case Temp. (°C) | DDM | Others | 
| FX55EGL4 | 8.5 | 40 | 1550 | EML + PIN | 0 ~ 70 | Yes | SMF, RoHS-6 | 
| FX55EGL4E | 8.5 | 40 | 1550 | EML + PIN | -10 ~ 85 | Yes | SMF, RoHS-6 | 
| FX55EGL4I | 8.5 | 40 | 1550 | EML + PIN | -40 ~ 85 | Yes | SMF, RoHS-6 |