| Form Factor | Speed | Lanes (Elec) | Modulation | Connector Types | Approx. Intro |
|---|---|---|---|---|---|
| SFP+ | 10 Gbps | 1 x 10G | NRZ | LC Duplex, RJ45 | 2006 |
| SFP28 | 25 Gbps | 1 x 25G | NRZ | LC Duplex | 2014 |
| SFP56 | 50 Gbps | 1 x 50G | PAM4 | LC Duplex | 2019 |
| SFP-DD | 100 Gbps | 2 x 50G | PAM4 | LC Duplex | 2019/20 |
| QSFP+ | 40 Gbps | 4 x 10G | NRZ | MPO-12, LC | 2012 |
| QSFP28 | 100 Gbps | 4 x 25G | NRZ | MPO-12, LC | 2014 |
| QSFP56 | 200 Gbps | 4 x 50G | PAM4 | MPO-12, LC | 2019 |
| QSFP-DD | 400G / 800G | 8 x 50/100G | PAM4 | MPO-16, LC, CS | 2017/21 |
| OSFP | 400G / 800G | 8 x 50/100G | PAM4 | MPO-12/16, LC | 2019 |
| OSFP1600 | 1.6 Tbps | 8 x 200G | PAM4 | MPO, Dual LC | 2024/25 |