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

    NVIDIA/Mellanox Compatible 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
    7 Reviews
    2 Sold
    US$ 2,384.00
    Compatible
    Transceivers type
    8 in real-time stock, 25 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.
    Please check our Return Policy for details.
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    1. Support Ethernet and InifiniBand
2. Higher bandwidth EML transmitter and PIN PD receiver, Class 1 Laser
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 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 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 EML 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 < 30W 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 Optical Transceivers Contrast Table

     

    Part Number

    QT-1.6T-OSFP-2DR4

    QT-1.6T-OSFP-2FR4

    Image

    NVIDIA Part Number

    MMS4A00

    -

    Data Rate

    2x 800Gb/s

    2x DR4

    2x 800Gb/s

    2x FR4

    Form Factor

    Twin-port OSFP (Flat top)

    Twin-port OSFP (Flat top)

    Optical Connector

    Dual MPO-12/APC

    Dual Duplex LC/UPC

    Cable Type

    MTP/MPO-12/APC OS2 SMF

    LC UPC Duplex OS2 SMF

    Wavelength

    1310nm

    1271nm, 1291nm, 1311nm and 1331nm

    Reach

    500m

    2km

    Modulation

    8x 200G-PAM4 Electrical to Dual

    4x 200G-PAM4 Optical Parallel

    8x 200G-PAM4 Electrical to Dual 4x 200G-PAM4 Optical Multiplexed

    Transmitter + Receiver Type

    EML + PIN PD

    EML + PIN PD

    Max Power Consumption

    30W

    30W

    Application

    1.6T and 2x 800G breakout

    Ethernet and InifiniBand

    Quantum-3 liquid-cooled switches

    1.6T

    Ethernet and InifiniBand

    Quantum-3 liquid-cooled switches
     

    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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    • ALL (7)
    • Customer Support (1)
    • Excellent Quality (1)
    • Good Price (1)
    • Shopping Experience (1)
    • High Reliability (4)
    • High Performance (1)
    • 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

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    • 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

    • Alston Nicholas United States of America
      2026-06-15

      When we purchased this 1.6T module, our current business wasn't fully utilizing such high bandwidth; it was more about preparing for the next phase of expansion. The biggest takeaway from the testing process is that it makes future upgrades much less stressful. Compared to changing the architecture every few years, we now prefer to plan ahead. At least based on the current test results, this choice has not been regrettable.

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

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Cliff Hoover United States of America
      2026-06-11

      When we make equipment selections internally, we test products from several suppliers simultaneously. The reason this 1.6T module was ultimately chosen is quite simple—the test results were relatively stable. Its performance was roughly the same across different time periods and equipment combinations, demonstrating strong consistency.

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

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Bradford United States of America
      2026-06-02

      We deployed a small batch for early validation, and the results were solid. It's nice to have a cost-effective option for next-generation XDR testing.

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

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Holmes L. United Kingdom
      2026-05-06

      I've been burnt by third-party optics before, but QSFPTEK have really cracked it with these. They'll definitely be our go-to brand for future network expansions.

      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 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 (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 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 (InfiniBand/Ethernet)
    Transceivers type
    1.6T 2FR4 | 2km | Dual Duplex LC/UPC | RHS/Flat Top
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    Bulk Order Quotes
    NVIDIA/Mellanox Compatible 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 (InfiniBand/Ethernet)

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

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