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| MPN | QSFP-40G-ER4 |
| Empowerfiber PN | QSFP-40G-ER4_tr1184 |
| Form Factor | QSFP plus |
| Max Data Rate | 40Gbps |
| Wavelength | 1310nm |
| Interface | LC duplex |
| Max Distance | 40km |
| Optical Components | DFB CWDM |
| Cable Type | SMF |
| DDM support | Yes |
| TX power | -3.7~+4.5dBm |
| Working Temperature Range | 0 to 70°C (32 to 158°F) |
| Compatible brand | Arista |