Can I connect this MMS1V70-CM to a standard 100G LR4 transceiver?

No. The MMS1V70-CM uses PAM4 modulation on a single wavelength, while LR4 uses NRZ modulation on 4 wavelengths. They cannot communicate.

What cable do I need to connect this to a 400G DR4 module?

You need a Single Mode fiber breakout cable: MPO-12 APC (for the 400G end) to 4x Duplex LC UPC (for four MMS1V70-CM units).

Why is the power consumption higher (4W) than standard SR4?

The higher power is due to the internal DSP (Digital Signal Processor) gearbox that actively converts the electrical NRZ signals into optical PAM4 signals in real-time.

NVIDIA Mellanox® MMS1V70-CM100GbE QSFP28 DR1 Transceiver: This advanced optical transceiver is designed to bridge the gap between legacy 100GbE (NRZ) and next-generation 400GbE (PAM4) architectures. Capable of transmitting 100Gb/s over 500m of single-mode fiber, it features an internal gearbox that converts 4x 25Gb/s NRZ electrical signals into a single 100Gb/s PAM4 optical lane. This unique capability allows four of these units to connect directly to a single 400G DR4 transceiver (MMS1V00-WM), enabling seamless 4x100G breakout configurations.

🔧 Technical Specifications

OEM: NVIDIA / Mellanox
P/N: MMS1V70-CM
Form Factor: QSFP28
Interface: 100GBASE-DR1 (Duplex LC)
Data Rate: 100GbE (Electrical: 4x 25G NRZ / Optical: 1x 100G PAM4)
Wavelength: 1310nm
Reach: 500 Meters on SMF
Power Consumption: < 4.0W

🌐 Engineering Context: The MMS1V70-CM is the architectural key to "Converged Infrastructure." It allows data center operators to keep existing 100G switches (like the SN2700) or servers while uplinking them to a high-speed 400G Spine (SN4700). Unlike standard LR4 optics which use 4 wavelengths, this DR1 optic uses a single lambda (wavelength) PAM4 modulation, making it the only valid 100G optic for breaking out a 400G DR4 port.

🧠 Typical Use Cases

Upgrading core switching to 400G while maintaining 100G access layers.
Connecting 100G servers/storage to 400G Spectrum-3/4 Leaf switches via breakout.
High-density 4x100G breakout clusters using MPO-to-4xLC splitter cables.
Campus interconnects up to 500m requiring PAM4 interoperability.

✅ Compatible With: NVIDIA Spectrum (SN2000 Series), ConnectX-4/5/6 NICs (Host Side). Designed to link optically with NVIDIA MMS1V00-WM (400G DR4) on the far side. (Requires host ports capable of CAUI-4 electrical signaling)

❌ NOT Compatible With: Standard 100GBASE-LR4 or SR4 transceivers (Incompatible modulation/wavelengths); Legacy 100G switches unable to supply 4W cooling; Multi-Mode Fiber (OM3/OM4) cabling.

🛠️ Installation & Optical Logic

The Gearbox Effect: This module is special because it "talks" NRZ to the host (switch/NIC) but "talks" PAM4 to the fiber. No special configuration is needed on the host side; it appears as a standard 100G port.
Breakout Cabling: To connect four of these MMS1V70-CM units to a single 400G MMS1V00-WM, you must use a Single-Mode MPO-12 APC to 4x LC UPC breakout cable.
Connector Polish: The LC ports on this transceiver are typically UPC (Blue). However, if connecting to an APC breakout cable, ensure the fiber patch cord handles the transition correctly.

🤝 Why Choose T.E.S IT-SOLUTIONS? We specialize in enterprise-grade NVIDIA networking solutions. Every unit is strictly validated for 100GbE DR1 performance in our lab. We offer expert consultation, fast worldwide shipping, and a comprehensive warranty to ensure your data center infrastructure runs without compromise.

NVIDIA Mellanox® MMS1V70-CM 100GbE QSFP28 DR1 Transceiver SMF 500m

Name: NVIDIA Mellanox® MMS1V70-CM 100GbE QSFP28 DR1 Transceiver SMF 500m
SKU: MMS1V70-CM_Refurbished

SKU: MMS1V70-CM_Refurbished

€1,000.00

Quantity