• H3C QSFP-100G-CWDM4-SM1300 compatible 100G QSFP28 transceiver, 1300nm WDM single mode 10km module
  • 100G QSFP28  2KM optical module with DDM digital diagnostic monitoring
  • 100G QSFP28 duplex LC transceiver for H3C data center switch interconnection
  • Bulk supply H3C compatible QSFP-100G-CWDM4-SM1300 single mode optical transceiver
  • H3C QSFP-100G-CWDM4-SM1300 compatible 100G QSFP28 transceiver, 1300nm WDM single mode 10km module
  • 100G QSFP28  2KM optical module with DDM digital diagnostic monitoring
  • 100G QSFP28 duplex LC transceiver for H3C data center switch interconnection
  • Bulk supply H3C compatible QSFP-100G-CWDM4-SM1300 single mode optical transceiver

NVIDIA(Mellanox)  MMA1L30-CM  Compatible 100G QSFP28 Transceiver | 100GBASE-CWDM4 2KM Module Bulk Wholesale | HYTOPTODEVICE

NVIDIA(Mellanox) MMA1L30-CM compatible 100G QSFP28 CWDM4 transceiver, 4×25G NRZ, 2km over OS2 single-mode fiber, DDM diagnostic support. Fully tested for NVIDIA Quantum switches and ConnectX adapters, ideal for EDR InfiniBand and 100G Ethernet leaf-spine deployments. Small sample testing, private labeling, custom EEPROM coding and OEM available.
NO. Brand  Compatible P/N Remarks
1 Cisco  QSFP-100G-CWDM4-S 
2 Arista Networks  QSFP-100G-CWDM4
3 Brocade  100G-QSFP28-CWDM4-2KM
4 Dell  Q28-100G-CWDM4
5 H3C  QSFP-100G-CWDM4-SM1300
6 HPE Aruba  R0Z30A 
7 Huawei  QSFP-100G-CWDM4
8 Juniper Networks  QSFP-100G-CWDM-T2 
9 NVIDIA(Mellanox)  MMA1L30-CM 
Description
NVIDIA(Mellanox)  MMA1L30-CM Compatible 100G QSFP28 Transceiver | 4×25G NRZ, 2km Single Mode Fiber

Product Overview

HYTOPTODEVICE 100G QSFP28 CWDM4 transceiver serves as a fully pin-compatible replacement for NVIDIA(Mellanox) MMA1L30-CM.
It leverages four-channel CWDM wavelength multiplexing and delivers 100G traffic via 4×25G NRZ signaling.
This optical transceiver targets short-reach data center interconnections and supports both 100GbE and EDR InfiniBand workloads.
It maintains stable 100G transmission up to 2km over standard OS2 single-mode fiber.
Duplex LC/UPC interfaces simplify fiber routing inside patch panels and server racks.
The module adheres to QSFP28 MSA and IEEE specifications.
Built-in DDM monitoring continuously tracks optical power, temperature, supply voltage and laser bias current.
Custom-tuned EEPROM profiles allow smooth detection on NVIDIA hardware without unauthorized transceiver alarms.
This flexible solution fits leaf-spine fabric, inter-switch trunk links and ToR uplinks to ConnectX series network adapters.
We provide pre-sample validation, customized firmware coding and scalable bulk pricing for HPC operators and system integrators.

Key Technical Specifications


NVIDIA(Mellanox)  Compatible   MMA1L30-CM Vendor Name HYTOPTODEVICE
Form Factor QSFP28 Max Data Rate 103.125Gbps (4x 25.78Gbps)
Wavelength 1271nm, 1291nm, 1311nm and 1331nm
Max Distance 2km
Connector Duplex LC/UPC Transmitter Type 4 x CWDM DML (DFB)
Cable Type SMF Receiver Type PIN
Modulation (Electrical) 4x 25G-NRZ TX Power -6.5~+2.5dBm
Power Consumption < 3.5W Receiver Sensitivity < -11.5dBm
Protocols QSFP28 MSA, SFF-8636, IEEE 802.3ba, IEEE 802.3bm, CAUI-4 Operation Temperature 0 to 70°C (32 to 158°F)

Usage Guidelines & Best Practices

  • Fiber Type: This CWDM4 transceiver requires OS2 single-mode fiber. Multimode fiber creates severe attenuation and unstable 100G links.
  • Port Configuration: Enable RS-FEC on NVIDIA ports to preserve optical margin near the 2km distance limit. FEC offsets signal loss caused by connectors, splices and gradual fiber aging.
  • Installation Tips: Hot plug operation is supported. Avoid scratching LC ferrule surfaces. Maintain the minimum fiber bend radius to prevent extra signal attenuation.
  • Distance Limit: This model supports a maximum transmission distance of 2km. Choose LR4 or long-range optical transceivers for longer fiber routes.
  • Operating Environment: Operate within 0°C–70°C temperature range. Keep port interfaces clean and avoid prolonged exposure to dust and moisture to extend service lifespan.

 

    Full Compatibility List & Supported Network Hardware

    1. Supported Hardware & Firmware

    This CWDM4 transceiver is pre-programmed with accurate NVIDIA identification data.
    It enables plug-and-play deployment on validated NVIDIA platforms and avoids persistent alarm messages under mainstream firmware releases.
    Validated NVIDIA(Mellanox) Device Models:
    • NVIDIA SN2410, SN2700 Ethernet Switches
    • NVIDIA Quantum EDR InfiniBand Switches
    • ConnectX-5, ConnectX-6 Series 100G Network Adapters
    • All NVIDIA hardware with standard QSFP28 100G ports

    2.Cross-Brand Compatibility

    The module complies with generic QSFP28 MSA standards.
    It can interconnect with equipment from Cisco, Dell, Huawei and other vendors in multi-brand fabrics.
    It works well during phased network refresh and hybrid infrastructure expansion.

    3.Free Value-Added Services

    We offer free EEPROM rewriting and private label customization.
    Pre-shipment sample validation and dedicated engineering support are available.
    Large-volume orders qualify for tiered pricing to reduce overall data center hardware expenditure.

    Primary Application Scenarios

    • Data Center Leaf-Spine Fabric: Short-distance 100G interconnections for NVIDIA Quantum and SN series data center architectures.
    • Inter-Switch Trunk Upgrade: Bandwidth expansion between core and aggregation switch layers.
    • Switch-to-Server Uplink: High-capacity connections from ToR switches to ConnectX server and storage NICs.
    • EDR InfiniBand Interconnect: Reliable short-range links for HPC clusters and high-performance computing environments.
    • Hybrid Multi-Vendor Fabric: Cost-effective 100G links deployed in mixed NVIDIA and third-party switch environments.
    Connectivity Solutions(Applications)

    1. Leaf-Spine Inter-Switch Uplink

    This 2km CWDM4 transceiver builds low-latency leaf-spine connections for HPC and cloud data centers. It interconnects leaf and spine switches across multiple rows and cabinets within the same facility. Consistent optical performance supports virtual machines, container clusters and heavy east-west data flows.

    NVIDIA compatible 100G QSFP28 CWDM4 transceiver deployed in leaf-spine architecture AmpCon-DC



    2. 100G to 100G for Switch-Switch Interconnection

     It expands trunk bandwidth between NVIDIA core and aggregation switches. It maximizes utilization of existing single-mode fiber infrastructure and reduces extra cabling labor. It elevates overall network capacity to handle growing AI and storage traffic without additional fiber installation.

    100G QSFP28 CWDM4  NVIDIA Mellanox compatible module for switch to switch interconnection

    3.100G FOR SWITCH-NIC

    It creates direct 100G uplinks between top-of-rack switches and server NICs. The 2km reach covers server farms, storage pods and clustered computing nodes inside one campus. Duplex LC connectors simplify cable routing in dense rack environments.

    100G switch to server adapter card high-speed connection QSFP28 CWDM4 optical transceiver module for data center

    The Core Feature 

    1.Optimized Thermal Profile for Dense Racks

    Power consumption stays under 3.5W. It reduces heat load in fully populated switch line cards. Standard QSFP28 form factor supports high-density port layouts.

    Low power 100G QSFP28 CWDM4 transceiver for H3C dense data center rack deployment

    2. Seamless NVIDIA Recognition Without Warnings

    Every production batch undergoes live compatibility verification on NVIDIA switches and adapters. Customized EEPROM firmware supports safe hot swapping. It maintains continuous operation without unknown transceiver alerts or port lockout risks.
    Full round quality tested 100G CWDM4 QSFP28 module 24/7 stable operation


    3.
    Rigorous Pre-Shipment Validation

    All modules pass optical calibration and temperature cycling screening. DDM functions are fully verified for reliable real-time monitoring. Consistent batch performance supports 24/7 production data center operation.

    Full round quality tested 100G CWDM4 QSFP28 module 24/7 stable operation



    FAQ

    Q1: Can CWDM4 run over multimode fiber (OM3/OM4)?
    A1: Standard 100G CWDM4 is engineered exclusively for OS2 single-mode fiber. OM3 and OM4 multimode fiber cannot transmit the required CWDM wavelength grid, which results in failed negotiation or intermittent connectivity. Our NVIDIA MMA1L30-CM compatible transceiver strictly follows single-mode design rules to prevent incorrect fiber deployment.

    Q2: Why is CWDM4 rated for 2km, but sometimes fails beyond 500m or 1km?
    A2: The 2km rating assumes clean fiber, quality connectors and minimal splice loss. Contaminated end faces, low-grade patch cords, excessive splices or mismatched connector types rapidly consume optical budget. Our factory validates each transceiver under realistic loss conditions to reduce unexpected field failures.

    Q3: Can I connect a 100G CWDM4 on one end and a 100G LR4 on the other?
    A3: CWDM4 and LR4 use different wavelength plans and signal architectures, so reliable interoperability cannot be achieved. A stable 100G link cannot be established. We recommend using our matching NVIDIA compatible CWDM4 transceivers on both ends of the fiber path for consistent performance.

    Q4: Will a Brand A CWDM4 module link up with a Brand B CWDM4 module?
    A4: Cross-brand CWDM4 interoperability cannot be fully guaranteed even with matching wavelength channels. Differences in transmit power, receiver sensitivity and internal firmware may trigger random link drops. Our MMA1L30-CM compatible transceivers maintain tight optical tolerances for predictable end-to-end links.

    Q5: What is the maximum allowed optical loss (power budget) for a link?
    A5: Typical 100G CWDM4 power budget is approximately 4.5 dB. Total loss from fiber, connectors and splices must remain under this threshold. Our datasheets include clear budget references, and our engineering team can assist with quick link loss calculation before network deployment.

    Q6: The module feels very hot to the touch. Is this normal?
    A6: Mild warmth during regular operation is acceptable, yet obvious overheating usually stems from insufficient rack airflow or densely packed ports. Our CWDM4 transceivers adopt refined thermal design and stable power control to stabilize operating temperature and lower long-term failure risk.

    Q7: What are the risks behind unusually cheap CWDM4 modules?
    A7: Extremely low-cost transceivers often use unqualified optical chips, skip complete calibration and carry unstable EEPROM programming. They frequently trigger switch alarms, generate high bit error rates and suffer premature failure. Our factory performs full optical and compatibility testing, offering competitive pricing without skipping critical quality checks.

    Q8: How should I sample-test a bulk shipment of CWDM4 transceivers?
    A8: Effective sampling requires DDM data verification, error-free traffic testing at rated distance and compatibility validation on your target NVIDIA hardware. We can supply reference test environments and operation procedures. Every batch shipped from our factory contains relevant test records, and we support pre-shipment sample evaluation for bulk purchasers.

    Q9: What should I do if a module freezes or stops responding on the switch?
    A9: Reseat the transceiver first and inspect fiber cleanliness and port configuration parameters. Confirm your switch firmware supports this transceiver model and FEC settings match on both ends. If the fault persists, our technical team helps locate coding or hardware defects and provides fast replacement solutions for defective units.

    Q10: What precautions are needed in high-humidity or coastal environments?
    A10: Coastal and high-humidity locations demand regular anti-corrosion connector maintenance, sealed patch panels and frequent end-face cleaning to avoid salt contamination and metal oxidation. Our transceivers use robust metal housings and stable internal components, while proper cable management and dust caps remain necessary to extend service life.


    Why Network Engineers Choose HYTOPTODEVICE

    HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.

    • Up to 70% cost savings vs OEM, transparent pricing & flexible bulk rates, supported quality returns
    • 100% real-device compatible with Cisco, Huawei,Dell,Juniper, and Arista
    • ISO 9001:2015 Shenzhen factory, full lineup: 1.25G/10G/25G/40G/100G/200G/400G/800G/1.6T transceivers
    • Ample stock, fast global DHL/FedEx shipping in 3–5 working days
    • Free pre-sales engineering support for custom EEPROM  & private label firmware
    • Real switch test videos available for pre-purchase review; inspection & shipping videos provided per order

    “Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia


    Quality Certification & Compliance

     At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, our processes ensure global compliance and reliability.

    We adhere to rigorous standards for our SFP modules and network solutions:

    • ISO 9001: Certified quality management and production consistency.

    • CE & FCC: Fully compliant for seamless Global Market Access.

    • RoHS: Committed to environmental responsibility and hazardous material control.

    • Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.

    Certified Quality. Global Standards. Guaranteed Performance.




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    • H3C QSFP-100G-CWDM4-SM1300 compatible 100G QSFP28 transceiver, 1300nm WDM single mode 10km module
    • 100G QSFP28  2KM optical module with DDM digital diagnostic monitoring
    • 100G QSFP28 duplex LC transceiver for H3C data center switch interconnection
    • Bulk supply H3C compatible QSFP-100G-CWDM4-SM1300 single mode optical transceiver

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