40G QSFP+ Modules
40G QSFP+ SR4: MTP, MPO, 40G QSFP+ LR4, 40G QSFP+ ER4, 40G QSFP+ ZR4
40G QSFP+ is a modern high-speed optical transceiver form factor based on the 40GBASE standard (40 Gb/s).
QSFP+ 40G (reprogrammable modules)
| Model QSFP+ 40G transceiver module | Data rate | Distance | Wavelength | Connector |
| QSFP-40G-SR4 MPO | 40 Gb/s | 100 m (328 ft) | 850 nm | MMF MTP/MPO |
| QSFP-40G-SR4 LC | 40 Gb/s | 100 m (328 ft) | 850 nm | LC duplex |
| QSFP-40G-CWDM4 LC | 40 Gb/s | 2 km (1.2 mi) | 1310 nm (1270-1330) |
LC duplex |
| QSFP-40G-LR4 LC | 40 Gb/s | 10 km (6.2 mi) | 1310 nm (1270-1330) |
LC duplex |
| QSFP-40G-LR4-S MPO | 40 Gb/s | 10 km (6.2 mi) | 1310 nm | SMF MTP/MPO |
| QSFP-40G-ER4 40km LC | 40 Gb/s | 40 km (24.9 mi) | 1310 nm (1270-1330) |
LC duplex |
| QSFP-40G-ZR4 80km LC | 40 Gb/s | 80km (49.7mi) | (1295-1304) | LC duplex |