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    Home / Products / Transceivers / NVIDIA InfiniBand Transceivers / 1.6T/800G OSFP InfiniBand XDR / 103646

    NVIDIA/Mellanox MMS4A20-XM800 (980-9IAT0-00XM00) Compatible 800GBASE-DR4 OSFP224 RHS/Flat Top PAM4 1310nm 500m DOM MTP/MPO-12 SMF InfiniBand XDR Opitcal Transceiver Module Used in ConnectX-8 Adapters

    Product No: 103646
    16 Reviews
    19 Sold
    US$ 1,299.00
    Compatible
    Transceivers type
    8 in real-time stock, 15 Jun, 2026

    Free Shipping over US$ 79.8

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    5-Year Warranty 1-Year Exchange
    Warranty
    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
    Returns & Exchange
    Exchanges caused by the customer's reasons will not be accepted.
    Please ensure that the item you're returning is repackaged with all the cords, adapters, and documentation included when you receive it.
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    1. Supports 1.6T up to two 800G links for switch to adapter
2. 4x 200G-PAM4 electrical to 4x 200G-PAM4 optical interfaces in parallel
3. Support InfiniBand XDR
4. EML + PIN Laser
5. Max power consumption ≤16W
    See more

    Specifications

    NVIDIA/Mellanox MMS4A20-XM800 Compatible 800G OSFP224 DR4 4x 200G PAM4 Optical Transceiver Module (1310nm, 500m, Single-Port MPO-12/APC Connector, SMF, 0℃ to +70℃, DDM)

     

    The NVIDIA/Mellanox MMS4A20-XM800 Compatible QT-OSFP224-800G-DR4 supports a maximum data rate of 850Gbps. It enables the fiber link of 500m over single-mode fiber (SMF) with MTP/MPO-12 APC connectors. 800G OSFP224 DR4 supports InfiniBand XDR protocol, adopting the Pulse Amplitude Modulation of 4-channels denoted as 200G-PAM4.

    This transceiver is compliant with IEEE 802.3dj, OSFP MSA Specification Rev 5.1, and CMIS Rev 5.2. The DDM (digital diagnostics monitoring) function is supported on the 800G optic transceiver to achieve real-time operating parameters monitoring.

     

    The MMS4A20-XM800 800G OSFP224 DR4 module supports the XDR 800Gb/s InfiniBand protocol. With a flat top design, it is used to link the Quantum-X800 QM3x00 switches using Twin-port OSFP224 2x800Gb/s transceivers to the dual 800Gb/s ConnectX-8 mezzanine card in liquid cooled system and ConnectX-8 PCIE cards. QSFPTEK NVIDIA InfiniBand compatible optics are 100% tested in NVIDIA InfiniBand host devices, ideal for InfiniBand NDR end-to-end systems

     

    Part Number QT-OSFP224-800G-DR4 Vendor Name QSFPTEK
    Form Factor Single-port OSFP224-RHS/Flat Top Max Data Rate 850 Gbps (8x 106.25 Gbps)
    Wavelength 1310nm Distance 500m
    Connector MPO-12 APC Cable Type SMF
    Transmitter Type EML Receiver Type PIN
    TX Power -3.3 to +4dBm Receiver Sensitivity < -6.3dBm
    Power Consumption ≤16W Modulation Format 4x 200G-PAM4 electrical to 4x 200G-PAM4 optical Parallel
    Extinction Ratio 3.5dB CDR (Clock and Data Recovery) TX and RX Built-in DSP
    Application ConnectX-8 mezzanine card in liquid cooled system and ConnectX-8 PCIE cards MTBF 3289474 Hours
    DDM/DOM Supported Temperature 0 to 70°C (32 to 158°F)
    Protocols IEEE 802.3dj, OSFP MSA Specification Rev 5.1, CMIS Rev 5.2 Warranty 1 Year
    Quality Testing Program
    Optical Transceivers Testing

    Take a look at our test program to get the reliable and high-performance optical transceivers.

    Quality Certifications

    Features

    • 1. Advanced Technology
      Features PAM4 modulation technology and built-in DSP chip.
    • 2. Best Price and High Quality
      Based on self-producing capacity and rigorous testing, QSFPTEK can provide cost-effective products with high reliability and performance at a trade price.
    • 3. Protocols
      Complies with IEEE 802.3dj, OSFP MSA Specification Rev 5.1, CMIS Rev 5.2.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

    Scenario 1: Twin-port 1.6T (2x 800G) XDR Switch to 2x 800G Links for Servers

     

    Twin-port 1.6T (2x 800G) XDR Switch to 2x 800G Links for Servers

     

     

    Scenario 2: Twin-port 1.6T (2x 800G) XDR Switch to 4x 400G ConnectX-8 Adapters

    Twin-port 1.6T (2x 800G) XDR Switch to 4x 400G ConnectX-8 Adapters

    Product details

    Broadcom DSP Chip Reshapes 800G High-Speed ​​Interconnect

       

    This 800GBASE-DR4 OSFP224 module utilizes Broadcom's top-tier PAM-4 DSP chip combines ultra-low bit error rate with the industry's lowest power consumption. It uses advanced equalization technology to compensate for optical impairments and integrates FEC functions to ensure link reliability, providing core support for high-speed data centers and AI clusters.

     


      

       

    Flat-top Design for Liquid Cooled Systems

       

    Finned-top modules feature a heat sink on the top of transceiver or its laser. With superior thermal management, they are ideal for switches requiring efficient heat dissipation in long-term stable operation, such as Quantum-2 InfiniBand switch and the Spectrum-4 Ethernet switch.

     

    Flat-top optics are used for adapters and Data Processing Units (DPUs), including the ConnectX-8 InfiniBand adapter in liquid cooled system and ConnectX-8 PCIE cards. Flat-top design can maximum optical coupling and transmission efficiency.

     

          

     

    Undergoes Comprehensive Performance Testing to Guarantee Optimal Reliability

     

    The QSFPTEK test center conducts complete testing procedures with advanced professional test equipment, including BER test, eye diagram test, Optical Spectrum test, jitter test, etc. Each module has been stringently tested by world-class test devices from Keysight and Anritsu to guarantee flawless operation and optimal reliability.

     

    Performance test devices  

     

     

    Questions & Answers

    • ALL (9)
    • QT-1.6T-OSFP-2DR4-IHS (1)
    • QT-1.6T-OSFP-2DR4 (6)
    • QT-OSFP-800G-2DR4 (1)
    • QT-1.6T-OSFP-2FR4 (4)

    Customer Reviews

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    • Premium Service (1)
    • Customer Support (2)
    • Excellent Quality (3)
    • Good Price (1)
    • Good Packaging (1)
    • Plug-and-Play (1)
    • Repurchase (1)
    • High Reliability (3)
    • Compatibility (5)
    • Fast Delivery (2)
    • High Performance (2)
    • Daniel B. United States of America
      2026-06-03

      Nice products, decent package, thanks!

      Transceivers typeMMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Julie Herty United States of America
      2026-05-27

      We were moving part of our infrastructure onto newer hardware and needed optics that wouldn’t turn deployment into a troubleshooting project. These OSFP224 DR4 modules were recognized immediately and synced faster than expected.

      Transceivers typeMMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Antonio Mexico
      2026-05-18

      Me compré el 800G DR4 para mejorar los enlaces troncales entre mis adaptadores ConnectX‑8 y un par de switches hoja. Lo metí en la ranura OSFP224 y el enlace jaló al primer chingadazo: ni broncas de compatibilidad, ni andarle moviendo. Sin duda volveré a comprar aquí cuando expanda el resto de los racks.

      Transceivers typeMMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Daniel R. United States of America
      2026-05-13

      I dropped these MMS4A20-XM800 compatible OSFP224 800G DR4 modules straight into our existing ConnectX-8 HCA adapters last week. Plug-and-play right out of the box, zero firmware conflicts, DOM monitoring works perfectly on our InfiniBand XDR fabric. We’re running full 800G line rate at ~320m over standard MPO-12 singlemode cables, no random CRC errors or link flutters after 7 days of heavy AI cluster traffic. Really impressed with this brand’s compatibility vs pricey OEM NVIDIA originals, definitely locking them in for all our future NIC upgrade orders.

      Transceivers typeMMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Martin Madge United States of America
      2026-05-11

      This was actually our first time deploying OSFP224 optics, so we were expecting at least a few compatibility headaches. Surprisingly smooth experience. The modules were recognized right away and the links stayed stable during migration weekend.

      Transceivers typeMMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Kasey L. United States of America
      2026-05-08

      Matched with my ConnectX-8, thanks for your recommendation.

      Transceivers typeMMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Max R. United States of America
      2026-05-04

      The optics work on DGX B300 with no issue. Thanks to Wendy, who is patient any time I raise a question.

      Transceivers typeMMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Terry United States of America
      2026-04-30

      We deployed these for high-bandwidth AI traffic and they've been performing reliably. The modules were detected immediately, link stability has been excellent, and the overall quality feels comparable to original branded optics.

      Transceivers typeMMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Andrew United States of America
      2026-04-26

      Works as intended. Someday, I may consider buying again.

      Transceivers typeMMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Mervyn UNITED STATES OF AMERICA
      2026-04-12

      Fast shipping! Excellent packaging, and the product quality is superb. Plug and play, stable transmission, and great price!

      Transceivers typeMMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    Resources

    • PDF Document
      QT-OSFP224-800G-DR4 Datasheet.pdf
    • PDF Document
      Transceiver Module User Guide.pdf
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    NVIDIA/Mellanox MMS4A20-XM800 (980-9IAT0-00XM00) Compatible 800GBASE-DR4 OSFP224 RHS/Flat Top PAM4 1310nm 500m DOM MTP/MPO-12 SMF InfiniBand XDR Opitcal Transceiver Module Used in ConnectX-8 Adapters

    Compatible NVIDIA (InfiniBand/Ethernet)

    Transceivers type MMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

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    Mark

    2023-12-15
    This product works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent value fo ct works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent valur money!

    Verified Purchase

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    NVIDIA/Mellanox MMS4A20-XM800 (980-9IAT0-00XM00) Compatible 800GBASE-DR4 OSFP224 RHS/Flat Top PAM4 1310nm 500m DOM MTP/MPO-12 SMF InfiniBand XDR Opitcal Transceiver Module Used in ConnectX-8 Adapters
    US$ 1,299.00
    Compatible
    NVIDIA (InfiniBand/Ethernet)
    Transceivers type
    MMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top
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    Bulk Order Quotes
    NVIDIA/Mellanox MMS4A20-XM800 (980-9IAT0-00XM00) Compatible 800GBASE-DR4 OSFP224 RHS/Flat Top PAM4 1310nm 500m DOM MTP/MPO-12 SMF InfiniBand XDR Opitcal Transceiver Module Used in ConnectX-8 Adapters

    Compatible NVIDIA (InfiniBand/Ethernet)

    Transceivers type MMS4A20-XM800 800G DR4 | 500m | Single MPO-12/APC | RHS/Flat Top

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