Sourcelight 40G QSFP Optical Module is a hot-pluggable high-density transceiver which provides 4 channels of traffic in each direction (Tx and Rx). QSFP+ supports up to 14 Gb/s per channel for applications such as 40G Ethernet, InfiniBand QDR or FDR, and OTN OTU3. Both multimode and single mode versions of the QSFP+ module are available, as well as QSFP-based active optical cables.
| Picture | Model | Product Description | Data Rate | Reach | Tx | Rx | Connector |
 | SLQS-40G-SR4 | QSFP+ SR4 | 40Gbit/s | 100m | 850nm VCSEL | PIN | MTP/MPO MM |
 | SLQS-40G-ESR4 | QSFP+ eSR4 | 40Gbit/s | 300m | 850nm VCSEL | PIN | MTP/MPO MM |
 | SLQS-40G-IR4 | QSFP+ IR4 | 40Gbit/s | 2km | 1271~1331nm CWDM DFB | PIN | Duplex LC SM |
 | SLQS-40G-LR4 | QSFP+ LR4 | 40Gbit/s | 10km | 1271~1331nm CWDM DFB | PIN | Duplex LC SM |
 | SLQS-40G-ER4 | QSFP+ ER4 | 40Gbit/s | 40km | 1271~1331nm CWDM DFB | APD | Duplex LC SM |
 | SLQS-40G-PSM-IR4 | QSFP+ PSM IR4 | 40Gbit/s | 1.4km | 1310nm FP | PIN | MTP/MPO SM |
 | SLQS-40G-PSM-LR4 | QSFP+ PSM LR4 | 40Gbit/s | 10km | 1310nm DFP | PIN | MTP/MPO SM |
 | SLQS-40G-LX4 | QSFP+ LX4 | 40Gbit/s | 150M/2km | 1271~1331nm CWDM DFB | PIN | Duplex LC MM/SM |
 | SLQS-40G-SR4-BD | QSFP+ BIDI | 40Gbit/s | 100m | 850nm VCSEL | PIN | Duplex LC MM |
| SLQS-40G-BD-RX | QSFP+ BIDI RX | 40Gbit/s | 100m | -- | PIN | Duplex LC MM |
 | SL-QSFP-SFP10G | QSFP+ To SFP+ Adapter | 40Gbit/s | -- | -- | -- | 10G SFP+ |
 | SLQS-40G-SWDM4 | QSFP+ SWDM | 40Gbit/s | 350m | VCSEL | PIN | Duplex LC MM |
