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    Home / Products / Transceivers / NVIDIA InfiniBand Transceivers / 1.6T/800G OSFP InfiniBand XDR / 103761

    NVIDIA/Mellanox Compatible SiPh 1.6T FR8 (2x FR4) Twin-port OSFP224 RHS/Flat Top PAM4 1310nm 2km Dual Duplex LC/UPC SMF DDM InfiniBand XDR Optical Transceiver Module for Liquid-Cooled Switches

    Product No: 103761
    19 Reviews
    2 Sold
    US$ 2,384.00
    Compatible
    Transceivers type
    8 in real-time stock, 10 Aug, 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.
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    1. Built-in Broadcom 3nm DSP and SiPh-based chip
2. Flat Top design for Quantum-3 Liquid-Cooled switches
3. Hot-pluggable OSFP1600 form factor with dual duplex LC/UPC connectors
4. Support 1.6Tb/s aggregate bit rate
5. Two wire serial Interface with digital diagnostic monitoring
6. Compliant with IEEE802.3dj D1p3: 2x800GBASE-FR4 optical interface and IEEE802.3dj D1p3: 2x800GAUI-4 C2M electrical interface
7. Compliant with OSFP MSA Specification Rev 5.1 RHS type 2 housing with Dual MPO-12/APC receptacleOSFP MSA Specification Rev 5.1 Type 2 housing with Dual LC/PC receptacle
8. Compliant with CMIS Rev 5.3
9. Complies with EU Directive 2011/65/EU (RoHS compliant)
    See more

    Specifications

    NVIDIA/Mellanox Compatible 1.6T FR8 (2x 800G FR4) OSFP224 Flat Top PAM4 Twin-port Silicon Photonics Optical Transceiver Module (1310nm, 2km, 2x duplex LC/UPC Connectors, SMF, 0℃ to +70℃, DDM)

     

    NVIDIA/Mellanox compatible 1.6T OSFP224 FR8 Twin-port 2x 800G FR4 transceiver module supports a max data rate of 1600 Gbps. It enables the fiber link of 2km over single-mode fiber (SMF) with dual duplex LC/UPC connectors. QSFPTEK manufactured 1.6T 2x FR4 OSFP complies with IEEE802.3dj D1p3: 2x800GBASE-FR4 optical interface, IEEE802.3dj D1p3: 2x800GAUI-4 C2M electrical interface, OSFP MSA Specification Rev 5.1 RHS type 2, CMIS Rev 5.3 and EU Directive 2011/65/EU (RoHS compliant). The 1.6T signal is carried over 4 wavelengths at 1271nm, 1291nm, 1311nm, and 1331nm. 

     

    DDM (digital diagnostics monitoring) function is supported on the 1.6T fiber optic transceiver to achieve real-time operating parameters monitoring. Adopting the Pulse-amplitude Modulation (PAM4) modulation, the FR8 OSFP224 achieves 1600 Gigabit Ethernet through 8 channels 200G PAM4. 

     

    The 1.6T FR8 OSFP Silicon Photonics module supports both Ethernet and InfiniBand XDR end-to-end system applications. Designed for supercomputing and HPC, this 1.6T OSFP transceiver provides high-speed connectivity for compute and storage infrastructure. OSFP-RHS with flat-top design is used in Quantum-3 liquid-cooled switches.

     

    Part Number QT-1.6T-OSFP-2FR4-RHS Vendor Name QSFPTEK
    Form Factor Twin-port OSFP-RHS/Flat Top Max Data Rate 1600 Gbps
    Wavelength 1271nm, 1291nm, 1311nm and 1331nm Distance 2km
    Connector Dual duplex LC/UPC Cable Type SMF
    Transmitter Type SiPh Receiver Type PIN PD
    TX Power -2.2 to 4.9 dBm Receiver Sensitivity < -6.2 dBm
    Packaging Technology COB (Chip on Board) Packaging Receiver Overload 4.9 dBm
    Power Consumption  ≤26W Modulation Format 8x 200G-PAM4 electrical to Dual 4x 200G-PAM4 optical CWDM4 Serial Multiplexed
    DDM/DOM Supported Temperature 0 to 70°C (32 to 158°F)
    Protocols IEEE802.3dj D1p3, OSFP MSA Rev 5.1, CMIS Rev 5.3 and EU Directive 2011/65/EU (RoHS compliant) Warranty 5 Years
    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 IEEE802.3dj D1p3, OSFP MSA Rev 5.1, CMIS Rev 5.3 and EU Directive 2011/65/EU.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

    1.6T XDR Switch to 1.6T XDR Switch Direct Connectivity:

     

    1.6T XDR Switch to 1.6T XDR Switch Direct Connectivity

    Product details

    1.6T/800G InfiniBand XDR Optical Transceivers Contrast Table

      

    Part Number

    QT-1.6T-OSFP-2DR4-IHS

    QT-1.6T-OSFP-2DR4-RHS

    QT-1.6T-OSFP-2FR4-IHS

    QT-1.6T-OSFP-2FR4-RHS

    QT-OSFP224-800G-DR4

    Image

    NVIDIA Part Number

    MMS4A00-XM/MMS4C10 (980-9IAH1-00XM00/980-9IAU0-00XM01)

    MMS4A00-XM/MMS4C10 (980-9IAH0-00XM00/980-9IAU0-00XM00)

    MMS4A50-XM (980-9IAS0-00XM00)

    /

    MMS4A20-XM800 (980-9IAT0-00XM00)

    Data Rate

    2x 800Gb/s

    2x DR4

    2x 800Gb/s

    2x DR4

    2x 800Gb/s

    2x FR4

    2x 800Gb/s

    2x FR4

    800Gb/s

    DR4

    Form Factor

    Twin-port OSFP224-IHS/Closed Finned Top

    Twin-port OSFP224-RHS/Flat top

    Twin-port OSFP224-IHS/Closed Finned Top

    Twin-port OSFP224-RHS/Flat top

    Single-port OSFP224-RHS/Flat Top

    Optical Connector

    Dual MPO-12/APC

    Dual MPO-12/APC

    Dual Duplex LC/UPC

    Dual Duplex LC/UPC

    MPO-12 APC

    Cable Type

    MTP/MPO-12/APC OS2 SMF

    MTP/MPO-12/APC OS2 SMF

    Duplex LC/UPC OS2 SMF

    Duplex LC/UPC OS2 SMF

    MTP/MPO-12/APC OS2 SMF

    Wavelength

    1310nm

    1310nm

    1271nm,1291nm,1311nm,1331nm

    1271nm,1291nm,1311nm,1331nm

    1310nm

    Reach

    500m

    500m

    2km

    2km

    500m

    Modulation

    8x 200G-PAM4 electrical to Dual 4x 200G-PAM4 optical Parallel

    8x 200G-PAM4 electrical to Dual 4x 200G-PAM4 optical Parallel

    8x 200G-PAM4 electrical to Dual 4x 200G-PAM4 optical Serial Multiplexed

    8x 200G-PAM4 electrical to Dual 4x 200G-PAM4 optical Serial Multiplexed

    4x 200G-PAM4 electrical to 4x 200G-PAM4 optical Parallel

    Transmitter + Receiver Type

    CW (SiPh Based) + PIN PD

    CW (SiPh Based) + PIN PD

    CW (SiPh Based) + PIN PD

    CW (SiPh Based) + PIN PD

    EML + PIN PD

    Max Power Consumption

    32W

    32W

    26W

    26W

    16W

    Application

    InfiniBand XDR Quantum-X800 air-cooled switches

    InfiniBand XDR Quantum-X800 liquid-cooled switches

    InfiniBand XDR Quantum-X800 air-cooled switches

    InfiniBand XDR Quantum-X800 liquid-cooled switches

    ConnectX-8 mezzanine card in liquid-cooled systems and ConnectX-8 PCIE cards

     

    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)
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    • Excellent Quality (3)
    • Good Price (3)
    • Shopping Experience (2)
    • Repurchase (1)
    • High Reliability (7)
    • Compatibility (4)
    • High Performance (2)
    • Leif Acheson United States of America
      2026-07-28

      We purchased several of these modules for the first phase of an AI infrastructure project. After evaluating their performance, we've decided to use the same model for the next deployment as well. Having a product that's consistent across different batches makes future expansion much easier.

      Transceivers type1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

      CompatibleNVIDIA/Mellanox (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Warner Herbert United States of America
      2026-07-20

      Bought this for a new AI networking deployment. The module was detected right away with no firmware issues. Packaging was secure, and everything arrived in perfect condition.

      Transceivers type1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Kerwin Boswell United States of America
      2026-07-17

      Installed this 1.6T module in our lab without any issues. The link came up immediately and stayed stable during long traffic tests. The build quality feels solid and the thermal performance has been consistent.

      Transceivers type1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Eunice Garcia United States of America
      2026-07-15

      We selected this module to prepare for future network expansion rather than just meet current bandwidth needs. Moving directly to 1.6T reduced the likelihood of another hardware refresh in the near future. So far, it has been a worthwhile investment for our infrastructure roadmap.

      Transceivers type1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Kieran G. United States of America
      2026-07-03

      Got this 1.6T module for our core upgrade. Plugged it in, no issues, and the price was right. Definitely ordering more.

      Transceivers type1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Bob L. United States of America
      2026-06-30

      Plugged it into the switch, fired it up, and it's been pushing traffic non-stop without a single hiccup.

      Transceivers type1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Terry United States of America
      2026-06-25

      We were impressed by the build quality. Everything looked well-made, and the module fit perfectly in our liquid-cooled switch without any issues.

      Transceivers type1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Quintion Julian United States of America
      2026-06-24

      We were looking for a higher-capacity option without increasing the number of switch ports, and this 1.6T module fit the requirement well. The twin-port architecture helped simplify our cabling layout, and overall deployment was cleaner than expected. A practical solution for high-bandwidth environments.

      Transceivers type1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Celeste Noel United States of America
      2026-06-20

      The high bandwidth capability was the main reason we selected it, and the dual-port design helped improve rack-level connectivity. The RHS form factor also worked well in our thermal management setup.

      Transceivers type1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Todd Longfellow United States of America
      2026-06-17

      We purchased several of these 1.6T modules for a liquid-cooled AI cluster upgrade. All units were recognized immediately by our switches, and the links came up without any tuning. Signal quality remained stable during stress testing, and temperatures stayed within expectations.

      Transceivers type1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

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      QT-1.6T-OSFP-2FR4 Datasheet.pdf
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    NVIDIA/Mellanox Compatible SiPh 1.6T FR8 (2x FR4) Twin-port OSFP224 RHS/Flat Top PAM4 1310nm 2km Dual Duplex LC/UPC SMF DDM InfiniBand XDR Optical Transceiver Module for Liquid-Cooled Switches

    Compatible NVIDIA/Mellanox (InfiniBand/Ethernet)

    Transceivers type 1.6T 2FR4 | 2km | Dual Duplex LC/UPC | 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 Compatible SiPh 1.6T FR8 (2x FR4) Twin-port OSFP224 RHS/Flat Top PAM4 1310nm 2km Dual Duplex LC/UPC SMF DDM InfiniBand XDR Optical Transceiver Module for Liquid-Cooled Switches
    US$ 2,384.00
    Compatible
    NVIDIA/Mellanox (InfiniBand/Ethernet)
    Transceivers type
    1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top
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    NVIDIA/Mellanox Compatible SiPh 1.6T FR8 (2x FR4) Twin-port OSFP224 RHS/Flat Top PAM4 1310nm 2km Dual Duplex LC/UPC SMF DDM InfiniBand XDR Optical Transceiver Module for Liquid-Cooled Switches

    Compatible NVIDIA/Mellanox (InfiniBand/Ethernet)

    Transceivers type 1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top

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