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The exact model MMS1X00-N5400 appears in a reseller listing, but the NVIDIA documentation available for this quick look identifies a different, similarly named model: MMS1X00-NS400, ordering number 980-9I068-00NM00. NVIDIA’s NS400 specifications should not be treated as confirmed specifications for N5400. The distinction matters before choosing a host, switch, or fiber cable.
What is confirmed about MMS1X00-N5400?
A reseller listing names MMS1X00-N5400 and describes it as a 400Gbps QSFP112 optic operating at 1310nm, with claimed compatibility for ConnectX-8 and Spectrum-X/GB300 use. Those are reseller claims; the NVIDIA product documents cited here do not confirm the exact N5400 model, its ordering number, specifications, or compatibility.
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NVIDIA’s published material instead covers MMS1X00-NS400, part number 980-9I068-00NM00. The two model strings are similar, but the available sources do not establish that they identify the same product. Verify the label and ordering number with the seller or NVIDIA before relying on NS400 specifications for an N5400 purchase.
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NVIDIA’s published specifications for the related NS400
The following figures apply to MMS1X00-NS400, not automatically to MMS1X00-N5400. NVIDIA’s product documentation was last updated January 21, 2026.
#1 Best Overall
Sale
LEEBICHEN 0.5m/1.64ft 400G QSFP112 to QSFP112 DAC Cable Compatible with NVIDIA DGX Spark & Other GB10 AI Systems, 30AWG Passive Direct Attach Copper Twinax, 400G Ethernet INFINIBAND Stacking Cable
- Compatible with NVIDIA DGX SPARK: Connect two compatible with DGX Spark systems through their QSFP network ports for high-speed inter-node communication. Suitable for desktop AI clustering, distributed inference, model development and fine-tuning workloads.
- UP TO 400GBPS CABLE CAPABILITY: QSFP112-to-QSFP112 direct attach cable compliant with the QSFP112 MSA and designed for 400G Ethernet applications. When used compatible with DGX Spark, the system establishes its supported 200GbE direct connection.
- 0.5M 30AWG PASSIVE COPPER CABLE: The short 1.64ft twinax cable is designed for equipment positioned side by side or within the same rack. Its passive construction requires no separate optical transceivers and consumes no more than 0.125W.
- HOT-PLUGGABLE AND QUALITY TESTED: Supports hot insertion and removal for easier installation. Each cable undergoes quality inspection for signal integrity and connection performance. Confirm that your equipment uses compatible QSFP112 ports before ordering.
- 【COMPATIBLE WITH DGX SPARK & GB10 AI SYSTEMS】Designed for QSFP/ConnectX-7 networking applications, Compatible with NVIDIA DGX Spark, compatible with ASUS Ascent GX10, compatible with Dell Pro Max with GB10, and compatible with Lenovo ThinkStation PGX.
| NS400 attribute | NVIDIA-published detail |
|---|---|
| Data rate and form factor | 400Gb/s, single-port QSFP112 |
| Optical type and wavelength | Single-mode DR4; 1310nm EML laser |
| Channels | Four 100G-PAM4 electrical and optical channels |
| Optical connector | One MPO-12/APC |
| Reach | Up to 500m in the product specification; configuration-specific limits should be checked |
| Maximum power | 9.5W |
| Other listed characteristics | Single 3.3V supply, hot-plug capability, RoHS compliance, Class 1 laser safety, CMIS 4.0 compliance |
These details are useful for identifying the adjacent official model, but they do not resolve N5400’s identity or establish that its hardware is interchangeable.
Reach depends on the documented setup
NVIDIA’s overview describes NS400 use with QSFP112 adapter or DPU connections, including ConnectX-7 and BlueField-3, and a twin-port 2x400G OSFP transceiver in a Quantum-2 InfiniBand or Spectrum-4 Ethernet switch. It says QSFP112 ports are not for use in switches and notes that both fibers connected to the twin-port transceiver must be the same type.
Rank #2
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LEEBICHEN 1m/3.28ft 400G QSFP112 to QSFP112 DAC Cable Compatible with NVIDIA DGX Spark & Other GB10 AI Systems, 30AWG Passive Direct Attach Copper Twinax, 400G Ethernet INFINIBAND Stacking Cable
- Compatible with NVIDIA DGX SPARK: Connect two compatible DGX Spark systems through their QSFP network ports for high-speed inter-node communication. Suitable for desktop AI clustering, distributed inference, model development and fine-tuning workloads.
- UP TO 400GBPS CABLE CAPABILITY: QSFP112-to-QSFP112 direct attach cable compliant with the QSFP112 MSA and designed for 400G Ethernet applications. When used with DGX Spark, the system establishes its supported 200GbE direct connection.
- 1M 30AWG PASSIVE COPPER CABLE: The short 1.64ft twinax cable is designed for equipment positioned side by side or within the same rack. Its passive construction requires no separate optical transceivers and consumes no more than 0.125W.
- ETHERNET AND INFINIBAND SUPPORT: Supports 400G Ethernet and compatible InfiniBand EDR/HDR applications. Actual speed and protocol depend on the connected network card, switch, firmware and port configuration.
- HOT-PLUGGABLE AND QUALITY TESTED: Supports hot insertion and removal for easier installation. Each cable undergoes quality inspection for signal integrity and connection performance. Confirm that your equipment uses compatible QSFP112 ports before ordering.
The overview includes a 500-meter crossover-cable description, while a particular use-case passage says each cable can link to the optic up to 100 meters. These statements refer to different contexts; do not assume either figure applies to every end-to-end link. Confirm reach for the specific endpoints, cable, and topology in current platform documentation.
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Quick Recap
Bestseller No. 4
Best Value
Compatible QSFP112 400G-DR4 Optical Transceiver, 1310nm, Single-Mode Fiber, MPO-12/APC Connector, 500M Reach, TAA Compliant, Silver
- PERFORMANCE: 400Gbps data rate with four parallel 100G PAM4 lanes, optimized for high-performance computing and AI/ML data center applications
- FORM FACTOR: QSFP112 design with 112G per lane electrical interface delivers streamlined connectivity and improved power efficiency
- CONNECTIVITY: MPO-12/APC connector supporting single-mode fiber links up to 500 meters with 1310nm wavelength operation
- MONITORING: Comprehensive digital optical monitoring (DOM) capabilities with CMIS 5.0 support for enhanced control
- SPECIFICATIONS: Typical power consumption of 8W, silver housing construction, and manufactured in USA/UK for government compliance
Rank #4
SpeedyFiber 1-Pack 0.4 Meter 400G QSFP112 DAC Cable, High-Speed AI Cluster Stacking Cable for NVIDIA DGX Spark / GB10 Systems
- High-Speed AI Cluster Stacking Cable for NVIDIA DGX Spark / GB10 Systems - A high-speed, cost-effective Direct Attach Copper cable assembly for 400G short-reach interconnects. The passive design requires no retimers, delivering 400Gbps (4x 100G PAM4) connectivity with ultra-low power consumption for intra-rack and inter-rack links.
- Compatible with NVIDIA/Mellanox NJAAKK-N911 / NJAAKK-0006 / LMTQF022-SD-R and NVIDIA DGX Spark / GB10 Systems, including NVIDIA DGX Spark Founders Edition / Acer Veriton GN100 / ASUS Ascent GX10 / Dell Pro Max with GB10 / GIGABYTE AI TOP ATOM / HP ZGX Nano AI Station G1n / Lenovo ThinkStation PGX Workstation / MSI EdgeXpert. For detailed information, please refer to the Compatibility Table.
- As a passive DAC, it operates at <0.1W, generating negligible heat. This eliminates the need for active cooling on cables, reduces thermal load in crowded racks, and lowers overall power costs.
- Supports 400G Ethernet (IEEE 802.3ck) and InfiniBand NDR protocols. Ideal for connecting 400G switches to servers, routers, or storage in high-density data center environments, enabling high-bandwidth AI, HPC, and cloud infrastructure.
- Fully compliant with QSFP112 MSA standards and CMIS management interface. Each cable is individually tested for signal integrity and mechanical reliability to ensure plug-and-play compatibility with major 400G platforms.
Rank #3
Sale
400G QSFP112 DAC Cable 0.5m Compatible with NVIDIA DGX Spark Stacking Cable
- Compatible with NVIDIA DGX SPARK: Connect two compatible with DGX Spark systems through their QSFP network ports for high-speed inter-node communication. Suitable for desktop AI clustering, distributed inference, model
- UP TO 400GBPS CABLE CAPABILITY: QSFP112-to-QSFP112 direct attach cable compliant with the QSFP112 MSA and designed for 400G Ethernet applications. When used compatible with DGX Spark, the system establishes its supported 200GbE direct connection.
- 0.5M 30AWG PASSIVE COPPER CABLE: The short 1.64ft twinax cable is designed for equipment positioned side by side or within the same rack. Its passive construction requires no separate optical transceivers and consumes no more than 0.125W.
- ETHERNET AND INFINIBAND SUPPORT: Supports 400G Ethernet and compatible InfiniBand EDR/HDR applications. Actual speed and protocol depend on the connected network card, switch, firmware and port configuration.
- HOT-PLUGGABLE AND QUALITY TESTED: Supports hot insertion and removal for easier installation. Each cable undergoes quality inspection for signal integrity and connection performance. Confirm that your equipment uses compatible QSFP112 ports before ordering.
Check these details before selecting an optic or cable
- Confirm the exact part. Check the printed model and ordering number. NVIDIA’s cited documents identify NS400 as 980-9I068-00NM00; they do not map N5400 to that number.
- Check both endpoints. Verify cage and port form factors, supported platform and firmware, and whether the intended link is Ethernet or InfiniBand. A QSFP112 module should not be assumed to fit or be supported in a switch port simply because a switch appears elsewhere in a product overview.
- Match the optical interface. For NS400, NVIDIA documents single-mode DR4 and MPO-12/APC. NVIDIA identifies APC connectors by a green connector shell and says APC is not compatible with aqua UPC. This guidance describes the NS400 interface, not a verified N5400 interface.
- Verify the cable end to end. A single-mode MPO-12/APC crossover fiber cable is a reasonable category to investigate for the documented NS400 setup. Confirm connector gender, polarity, fiber direction, both endpoint interfaces, and the required distance before ordering; no specific cable is confirmed here for N5400.
- Confirm platform status and operating limits. NVIDIA compatibility lists associate NS400 part number 980-9I068-00NM00 with ConnectX-8 firmware compatibility and label it “P-Rel”; another NVIDIA list describes the same model as 500m and marks it “Prototype.” These labels belong to their respective documents and versions, not a universal current status. Check the current documentation for the exact hardware and firmware in use, along with power and thermal requirements.
What to take away from the similar model names
- N5400: exact name and stated 400Gbps/1310nm details come from a reseller listing; the cited NVIDIA materials do not confirm them.
- NS400: NVIDIA documents a 400Gb/s QSFP112 single-mode DR4 transceiver at 1310nm with an MPO-12/APC interface and up to 500m specified reach, subject to the configuration-specific qualifications above.
- Buying decision: treat N5400 and NS400 as distinct unless the manufacturer or seller provides a verifiable mapping. Confirm the module, platform, and cable together rather than selecting by a similar model name.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
