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800G OSFP SR8 Transceiver for Quantum-2 & Spectrum-4 Switches MMA4Z00-NS 50m
Product Details:
| Brand Name: | Mellanox |
| Model Number: | Mellanox Optical Transceiver MMA4Z00-NS |
| Document: | MMA4Z00-NS.pdf |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1pcs |
|---|---|
| Price: | Negotiate |
| Packaging Details: | outer box |
| Delivery Time: | Based on inventory |
| Payment Terms: | T/T |
| Supply Ability: | Supply by project/batch |
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Detail Information |
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| Condition: | New And Original | Availability: | Stock |
|---|---|---|---|
| Technology: | InfiniBand And Ethernet | Max Speed: | 800Gb/s |
| Length: | 50m | Temperature Range: | 0°C To +70°C |
| Highlight: | 800G OSFP SR8 transceiver,Nvidia Quantum-2 transceiver,OSFP transceiver with 50m reach |
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Product Description
NVIDIA MMA4Z00-NS 800G OSFP Twin-Port SR8 Multimode Transceiver
2×400Gb/s 8-Channel 100G-PAM4 Optical Module for Quantum-2 & Spectrum-4 Switches
Product Overview
The NVIDIA MMA4Z00‑NS is an 800Gb/s Twin‑port OSFP SR8 multimode parallel transceiver that integrates two independent 400Gb/s transceiver engines into a single OSFP form factor. It uses two 4‑channel MPO‑12/APC optical connectors, each supporting 400Gb/s over 100G‑PAM4 modulation. This innovative design enables 64 ports of 400Gb/s in a 32‑cage Quantum‑2 switch, delivering unprecedented switching density. The transceiver firmware automatically supports both InfiniBand NDR and 400GbE protocols based on the host switch. Available in finned‑top (air‑cooled switches) and flat‑top (DGX H100 / liquid‑cooled) variants.
Key Features
- Data rate: 800Gb/s (2× 400Gb/s) - 8× 100G‑PAM4 lanes
- Protocol support: InfiniBand NDR, 400GbE (auto‑detected)
- Optical interface: Two MPO‑12/APC connectors (4‑ch each)
- Wavelength: 850nm VCSEL
- Reach: 50m OM4 / 30m OM3
- Power consumption: 17W max (15W typical) / 2W low‑power sleep
- Hot‑pluggable: OSFP form factor, OSFP MSA compliant
- Management: CMIS 4.0 compliant, I²C interface
- Digital diagnostics: DDM for temperature, voltage, bias, Tx/Rx power
- Compliance: RoHS, Class 1M laser safety
Technology & Design
The MMA4Z00‑NS is a key NVIDIA innovation that enables two independent 400G transceiver engines within a single OSFP shell. This is achieved through a patented vertical connector arrangement that accommodates two MPO‑12/APC optical connectors in the OSFP form factor. Each engine supports 4 lanes of 100G‑PAM4 modulation using 850nm VCSEL technology. The finned‑top variant provides enhanced cooling for air‑cooled switches, while the flat‑top variant is designed for DGX H100 Cedar‑7 systems and liquid‑cooled environments. The transceiver supports adaptive Tx equalization, programmable Rx output amplitude, and comprehensive digital diagnostics with PRBS generator/checker and loopback modes.
Typical Deployments
- Switch‑to‑switch (800G): Link two Quantum‑2 or Spectrum‑4 switches at 800Gb/s using two straight MFP7E10 fiber cables.
- Switch‑to‑two 400G adapters: Connect to two ConnectX‑7/OSFP or BlueField‑3/QSPP112 adapters at 400G each using straight cables.
- Switch‑to‑four 200G adapters: Use MFP7E20 1:2 splitter cables to connect to four 200G adapters, with automatic power reduction in the 400G transceivers.
- DGX H100 integration: Flat‑top variant connects Cedar‑7 GPU systems to Quantum‑2 or Spectrum‑4 switches.
- Switch‑to‑switch (2 ×400G): Route two fibers to different switches for dual 400G links.
Compatibility
Switches: NVIDIA Quantum‑2 (InfiniBand NDR), Spectrum‑4 (Ethernet 400G) - both require finned‑top OSFP shells for air‑cooled operation.
Adapters / DPUs: ConnectX‑7/OSFP, ConnectX‑7/QSFP112, BlueField‑3/QSFP112. Single‑port OSFP transceivers (MMA4Z00‑NS400) are not for use in switches.
Recommended fiber cables: MFP7E10 (straight, 4‑ch to 4‑ch) and MFP7E20 (1:2 splitter, 4‑ch to 2×2‑ch) - both Type‑B crossover with MPO‑12/APC.
Critical rule: Both fibers in a twin‑port transceiver must be the same type (both straight or both splitter) - cannot be mixed.
Protocol: Auto‑detects InfiniBand NDR or 400GbE based on switch protocol.
Specifications
| Parameter | Value |
|---|---|
| Product Type | 800G Twin‑port OSFP SR8 Multimode Transceiver |
| Form Factor | OSFP (finned‑top or flat‑top variants) |
| Data Rate | 800Gb/s (2× 400Gb/s) - 8× 100G‑PAM4 |
| Optical Connectors | Two MPO‑12/APC (each 4‑channel) |
| Active Fibers per Port | 8 (4 TX + 4 RX) per MPO connector |
| Wavelength | 850nm VCSEL |
| Reach (OM4) | Up to 50m (with 2 patch panels) |
| Reach (OM3) | Up to 30m (with 2 patch panels) |
| Supply Voltage | 3.3V (3.135V - 3.465V) |
| Max Power (active) | 17W max (15W typical) |
| Low‑Power Mode | 2W max |
| Operating Case Temperature | 0 °C to 70 °C |
| Storage Temperature | ‑40 °C to 85 °C |
| Management Interface | I²C (CMIS 4.0 compliant) |
| Digital Diagnostics | Temp, Vcc, bias, Tx/Rx power per lane |
| Laser Safety | Class 1M (IEC 60825‑1, CDRH 21 CFR 1040) |
| Model Number | MMA4Z00-NS |
Finned‑top variant is for air‑cooled Quantum‑2/Spectrum‑4 switches. Flat‑top variant (MMA4Z00‑NS‑FLT) is for DGX H100 Cedar‑7 and liquid‑cooled systems.
Selection Guide
| Ordering Part Number | Description | Form Factor | Top |
|---|---|---|---|
| MMA4Z00-NS | 800G OSFP SR8, 2 ×400G, multimode, MPO‑12/APC, 850nm, 50m | OSFP | Finned |
| MMA4Z00-NS-FLT | 800G OSFP SR8, 2×400G, multimode, MPO‑12/APC, 850nm, 50m | OSFP | Flat |
| MMA4Z00-NS400 | 400G OSFP SR4, single‑port (for ConnectX‑7/OSFP adapters) | OSFP | Flat |
| MMA1Z00-NS400 | 400G QSFP112 SR4 (for ConnectX‑7/QSFP112 & BlueField‑3) | QSFP112 | -- |
MMA4Z00‑NS (finned) is required for Quantum‑2 and Spectrum‑4 air‑cooled switches. Flat‑top variant is for DGX H100 and liquid‑cooled systems.
Advantages
- Unmatched density: 64 ports of 400Gb/s in a 32‑cage Quantum‑2 switch - 2× density compared to conventional designs.
- Flexible deployment: Supports switch‑to‑switch (800G), switch‑to‑adapter (2×400G), and switch‑to‑4 adapters (4×200G) with splitter cables.
- Protocol agnostic: Auto‑detects InfiniBand or Ethernet, simplifying inventory and logistics.
- Power efficiency: 2W low‑power sleep mode and automatic 200G power reduction on the transceiver side.
- Versatile cabling: Supports straight or splitter cables with independent length choices (both cables must be same type).
- Proven reliability: NVIDIA end‑to‑end system validation guarantees optimal performance.
Service & Support
As an authorized NVIDIA partner, Hong Kong Starsurge Group provides:
- Technical pre‑sales consultation for 800G/400G optical interconnect design.
- Global logistics with real‑time tracking and customs clearance support.
- Standard NVIDIA hardware warranty coverage.
- Firmware/compatibility advisory for Quantum‑2 and Spectrum‑4 platforms.
- Multilingual support (English, Mandarin, Cantonese) via email or phone.
Frequently Asked Questions
Q: What is the difference between finned‑top and flat‑top variants?
A: Finned‑top (MMA4Z00‑NS) is for air‑cooled Quantum‑2 and Spectrum‑4 switches with reduced airflow. Flat‑top (MMA4Z00‑NS‑FLT) is for DGX H100 Cedar‑7 systems and liquid‑cooled environments.
Q: Can I use straight and splitter cables together in the same transceiver?
A: No. Both fiber ports in a twin‑port OSFP transceiver must use the same cable type - either both straight (MFP7E10) or both splitter (MFP7E20).
Q: What is the maximum reach of this transceiver?
A: 50m over OM4 multimode fiber (with two patch panel junctions) or 30m over OM3.
Q: Can this module be used in ConnectX‑7 adapters?
A: No. This is a twin‑port switch transceiver. For ConnectX‑7 adapters, use single‑port OSFP (MMA4Z00‑NS400) or QSFP112 (MMA1Z00‑NS400) transceivers.
Handling Precautions
Laser Safety Warning: Exposure to laser light can cause damage to the eyes. Use protective face gear while handling this product and keep laser light away from eyes and face.
- Keep dust caps on both optical connectors whenever fiber cables are not connected.
- Always clean both transceiver receptacles and cable connectors prior to insertion - 80% of link problems are related to dirty optical connectors.
- Observe standard ESD precautions during installation and handling.
- Do not apply liquids to the optical connectors; use approved cleaning tools and methods.
- Use only NVIDIA‑supplied or qualified fiber cables (MFP7E10/MFP7E20 series).
- Both cables should be approximately the same length to avoid latency mismatch (4.5ns/m).
- Ensure the module is fully inserted and latched to prevent thermal and connectivity issues.
About Hong Kong Starsurge Group
Hong Kong Starsurge Group Co., Limited is a technology‑driven provider of network hardware, IT services, and system integration solutions. Since 2008, we have served customers worldwide with networking equipment including switches, NICs, wireless access points, controllers, cables, and optical modules. Our experienced sales and technical teams support diverse industries such as government, healthcare, manufacturing, education, finance, and enterprise. We deliver customized solutions, global logistics, and multilingual support - all built on a customer‑first commitment to reliability, performance, and scalability.
Key Facts
| Part number: | MMA4Z00-NS |
| Form factor: | OSFP (finned‑top) |
| Data rate: | 800G (2×400G) |
| Connectors: | 2× MPO‑12/APC |
| Reach: | 50m OM4 / 30m OM3 |
| Wavelength: | 850nm VCSEL |
| Power: | 17W max / 2W sleep |
| Application: | Quantum‑2, Spectrum‑4 |
Buyer Checklist
- Confirm your switch supports OSFP twin‑port transceivers (Quantum‑2 or Spectrum‑4).
- Select correct top variant: finned‑top for air‑cooled switches, flat‑top for DGX/liquid‑cooled.
- Choose cable type: straight (MFP7E10) for 400G per port or splitter (MFP7E20) for 200G per port.
- Ensure both cables are the same type (both straight or both splitter).
- Verify fiber plant is OM3 or OM4 with MPO‑12/APC connectors.
- Check switch ambient temperature requirements (max 35°C with all fans, 30°C with fan failure).
- Confirm protocol: InfiniBand NDR or 400GbE (auto‑detected).
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