The QSFP+ transceiver is the dominant transceiver form-factor used for 40 Gigabit Ethernet applications. In 2010 the IEEE standard 802.3ba released several 40-Gbps based solutions, including a 40GBASE-SR4 parallel optics solution for MMF (Multimode Fiber). Since then, several engineered solutions have been released, including 40GBASE-CSR4, which is similar to 40GBASE-SR4 but extends the distance capabilities.
Features of 40GBASE QSFP+ Modules
- Hot-swappable input/output device that plugs into a 40 Gigabit Ethernet QSFP port
- Interoperable with other IEEE-compliant 40GBASE interfaces where applicable
- High-speed electrical interface compliant to the IEEE 802.3ba standard
- QSFP Form factor, 2-wire I2C communication interface and other low-speed electrical interface compliant to SFF 8436 and QSFP Multisource Agreement (MSA)
QSFP+ Modules Portfolio
| Product | Type | Connector Type |
| QSFP-40G-SR4-S | 40GBASE-SR4, 4 lanes, 850 nm MMF | MPO-12 |
| QSFP-40G-LR4-S | 40GBASE-LR4, 1310 nm, SMF | LC |
| QSFP-40G-SR-BD | 40GBASE-SR-BiDi, duplex MMF | LC |
| QSFP-40G-BD-RX | 40GBASE-SR-BiDi, duplex MMF, Monitor | LC |
| QSFP-40G-SR4 | 40GBASE-SR4, 4 lanes, 850 nm MMF | MPO-12 |
| FET-40G | Fabric Extender, 4 lanes, 850 nm MMF | MPO-12 |
| QSFP-40G-CSR4 | 40GBASE-CSR4, 4 lanes, 850 nm MMF | MPO-12 |
| WSP-Q40GLR4L | 40GBASE-LR4-Lite, 1310 nm, SMF | LC |
| QSFP-4X10G-LR-S | 4x10GBASE-LR | MPO-12 |
| QSFP-40G-LR4 | 40GBASE-LR4, 1310 nm, SMF with OTU3 data-rate support | LC |
| QSFP-40G-ER4 | 40GBASE-ER4, 1310 nm, SMF with OTU3 data-rate support | LC |
| QSFP-4SFP10G-CU (0.5M,1M,2M, 3M,4M, 5M) | QSFP to 4 SFP+ copper break-out cables | — |
| QSFP-4X10G-AC (7M, 10M) | ||
| QSFP-H40G-CU (0.5M,1M,2M, 3M,4M, 5M) | QSFP to QSFP copper direct-attach cables | |
| QSFP-H40G-ACU (7M, 10M) | ||
| QSFP-4X10G-AOC (1M, 2M, 3M, 5M, 7M, 10M) | QSFP to four SFP+ active optical breakout cables | |
| QSFP-H40G-AOC (1M, 2M, 3M, 5M, 7M, 10M, 15M, 20M, 25M, 30M) | QSFP to QSFP active optical cables | |
| CVR-QSFP-SFP10G | QSFP 40G to SFP+ 10G adapter |
