Introduction
The NVIDIA MMS4X00-NM16 is an Ethernet 800Gb/s, Twin-port OSFP, DR8 single mode, parallel, 8-channel transceiver using a single 8-channel MPO-16/APC optical connectors at 800Gb/s. The parallel single mode, datacenter reach 8-channel (DR8) design uses 100G-PAM4 modulation and has a maximum fiber reach of 500-meters using 8 single mode fibers. The 500-meter length assumes two optical patch panels in the link.
The Twin-port DR8 transceiver is a key NVIDIA innovation with two internal transceiver engines enabling 64-ports of 800Gb/s in a 64-OSFP cage Spectrum-4 switch.
Spectrum-4 switches require finned-top OSFP shells for extra transceiver cooling. The main application for MMS4X00-NM16 is linking two switches together with up-to 500-meter link length. The transceiver guarantees optimal operation in NVIDIA end-to-end Ethernet systems and a rigorous production tested to ensure the best out-of-the-box installation experience, performance, and durability.
Finned Top Transceiver

Images are for illustration purposes only. Product labels, colors and lengths may vary.
Key Features
800G (DR8) single mode transceiver
8-channels of 100G-PAM4 electrical modulation
Single MPO-16/APC optical connectors
Twin-port 8-channel 100G-PAM4 optical modulation
Parallel MPO-16 receptacle
Finned-top OSFP for air-cooled switches
1310nm EML laser
500m Max reach
17-Watts max power
1.5 Watt low-power sleep mode
Single 3.3V power supply
Class 1 laser safety
Hot pluggable, RoHS compliant
OSFPmsa.org compliant
supports CMIS functions
Case temperature range of 0°C to +70°C
Applications
Used to link Spectrum-4 air-cooled switches together