Mellanox® MMS1V00-WM transceiver is a single-mode, 4-channel (DR4), QSFP-DD optical transceiver designed for 400 Gigabit Ethernet (GbE) links on up to 500m of single mode fiber. 
MMS1V00-WM converts 8 input channels of 50Gb/s PAM4 electrical data to 4 channels of 100Gb/s PAM4 optical signals, using a nominal wavelength of 1310nm, for 400Gb/s optical transmission. 
The transceiver has a standard QSFP-DD connector on the electrical side towards the host system. The optical interface is composed of four optical channels/fibers in each direction, intended for a parallel single mode optical cable via a standard MPO connector. 
Rigorous production testing ensures the best out-of-the-box installation experience, performance and durability
Products specifications
| Attribute name | Attribute value | 
|---|
| Width | 5.04" | 
| Depth | 0.722" | 
| Height | 0.335" | 
| Form factor | QSFP-DD | 
| Product color | Silver | 
| Hot-Plug support | Yes | 
| Plug and Play | Yes | 
| Easy to install | Yes | 
| Number of products included | 1 pc(s) | 
| SFP transceiver type | Fiber optic | 
| Maximum data transfer rate | 400000 Mbit/s | 
| Interface type | QSFP | 
| Single-mode fiber (SMF) supported | Yes | 
| Fiber optic connector | QSFP-DD | 
| Maximum transfer distance | 19685" | 
| Wavelength | 1310 nm |