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    Home / Products / Transceivers / 400G/800G Ethernet Transceivers / 800G QSFP-DD / 103659

    Arista Compatible 800GBASE-2DR4 Twin-port QSFP-DD PAM4 1310nm 500m Dual MTP/MPO-12 APC SMF Optical Transceiver Module

    Product No: 103659
    18 Reviews
    53 Sold
    US$ 1,034.90
    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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    Add to Cart Bulk Order Quotes 
    1. 8 electrical input/output channels x 106.25G PAM4 modulation
2. Support 800G to 2x 400G DR4 application, no breakout cables required
3. Designed with two transmitter/receiver units, dual MTP/MPO-12 connectors
4. EML + PIN Laser
5. Max power consumption ≤18W
    See more

    Specifications

    Arista Compatible 800G QSFP-DD 2x DR4 PAM4 Optical Transceiver Module (1310nm, 500m, 2x MTP/MPO-12 Connectors, SMF, 0℃ to +70℃, DDM)

     

    Arista Compatible 800G OSFP 2x DR4 transceiver module supports a max data rate of 850Gbps. It enables the fiber link of 500m over single-mode fiber (SMF) with dual MTP/MPO-12 connectors. The 800 Gigabit Ethernet signal is carried over 1310nm. QSFPTEK manufactured  2x 400GBASE DR4 OSFP complies with IEEE 802.3cu-2021, IEEE 802.3ck-2022, OSFP MSA HW Rev 7.0, CMIS Rev 5.0. DDM (digital diagnostics monitoring) function is supported on the 800G fiber optic transceiver to achieve real-time operating parameters monitoring. Adopting the Pulse-amplitude Modulation (PAM4) modulation, the 2x DR4 OSFP achieves 800 Gigabit Ethernet through 8x 106.25 PAM4 Retimed 8x100GAUI-1 C2M electrical interface. The 800G 2x DR4 OSFP is widely used for 800 gigabit Ethernet, data centers, and 800G to 2x 400G applications.

     

    Part Number QT-QSFP-DD-800G-2DR4 Vendor Name QSFPTEK
    Form Factor OSFP Max Data Rate 850Gbps (8x 106.25Gbps)
    Wavelength 1310nm Distance 500m
    Connector Dual MTP/MPO-12/APC Cable Type SMF
    Transmitter Type EML Receiver Type PIN
    TX Power -2.9 to +4dBm Receiver Sensitivity < -5.9dBm
    Packaging Technology COB (Chip on Board) Packaging Receiver Overload 4 dBm
    Power Consumption <18W Modulation Format PAM4
    DDM/DOM Supported Temperature 0 to 70°C (32 to 158°F)
    Protocols IEEE 802.3cu-2021, IEEE 802.3ck-2022, OSFP MSA HW Rev 7.0, CMIS Rev 5.0 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 IEEE 802.3cu-2021, IEEE 802.3ck-2022, OSFP MSA HW Rev 7.0, CMIS Rev 5.0 standards.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

    Scenario 1: 800G to 800G Direct Connectivity

    800G QSFP-DD 2DR4 Direct Connectivity

     

     

    Scenario 2: 800G to 2x 400GE Breakout Connectivity

    800G QSFP-DD 2DR4 Breakout Connectivity

    Product details

    Broadcom DSP & Broadcom VCSEL Unlock High-Efficiency AI Data Center Interconnect

       

    This 800GBASE-2DR4 QSFP-DD 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.

     


       

    8x 100Gbps PAM4 Modulation Technology

       

    Utilize 8x electrial lanes and 8x optical lanes modulated at 100G PAM-4 per lane. On the output side, it convert 8x 106.25Gb/s electrical signal to 8x 106.25Gb/s optical signals. On the receiver side, it convert 8x 100Gb/s optical signal to 8x 100Gb/s electrical signals.

     

      

     

    Various Switch Tests

     

    Every module is quality tested for compatibility in the multi-brand switches environment, which guarantees flawless operations.

     

    QSPFTEK LAB All Brands Switches Show

     

     

    Comprehensive Testing

     

    Every module is qualified through rigorous procedures and advanced equipment to ensure high-quality and reliable optical devices for you.

     

    QSFPTEK Test Devices

     

     

    800G QSFP-DD Optical Transceivers Contrast Table

     

    Part Number

    QT-QSFP-DD-800G-SR8

    QT-QSFP-DD-800G-2VR4

    QT-QSFP-DD-800G-DR8

    QT-QSFP-DD-800G-2DR4

    Image

    Data Rate

    800G

    800G

    800G

    800G

    Optical Connector

    Single MPO-16/APC

    Dual MPO-12/APC

    Single MPO-16/APC

    Dual MPO-12/APC

    Cable Type

    MMF

    MMF

    SMF

    SMF

    Wavelength

    850nm

    850nm

    1310nm

    1310nm

    Reach

    50m

    50m

    500m

    500m

    Modulation

    PAM4

    PAM4

    PAM4

    PAM4

    Max Power Consumption

    < 16W

    < 16W

    < 16.5W

    < 18W

    Application

    800G to 800G, 800G to 2x400G breakout

    800G to 800G, 800G to 2x400G breakout

    800G to 800G, 800G to 2x400G breakout, 800G to 8x100G breakout

    800G to 800G, 800G to 2x400G breakout

    Matching Downlink  Transceivers

    QT-QSFP-DD-SR4 (400G)

    QT-Q112-400G-SR4

    QT-OSFP-400G-SR4

    QT-QSFP-DD-SR4 (400G)

    QT-Q112-400G-SR4

    QT-OSFP-400G-SR4

    QT-QSFP-DD-DR4 (400G)

    QT-Q112-400G-DR4

    QT-OSFP-400G-DR4

    QT-QSFP28-DR1

    QT-QSFP-DD-DR4 (400G)

    QT-Q112-400G-DR4

    QT-OSFP-400G-DR4

    Part Number

    QT-QSFP-DD-800G-2XDR4

    QT-QSFP-DD-800G-2FR4

    QT-QSFP-DD-800G-2LR4

    		  

    Image

    		 

    Data Rate

    800G

    800G

    800G

    		  

    Optical Connector

    Dual MPO-12/APC

    Dual Duplex CS/UPC

    Dual Duplex LC/UPC

    		  

    Cable Type

    SMF

    SMF

    SMF

    		  

    Wavelength

    1310nm

    1271nm, 1291nm, 1311nm and 1331nm

    1271nm, 1291nm, 1311nm and 1331nm

    		  

    Reach

    2km

    2km

    10km

    		  

    Modulation

    PAM4

    PAM4

    PAM4

    		  

    Max Power Consumption

    < 18W

    < 18W

    ≤ 18W

    		  

    Matching Transceivers

    QT-QSFP-DD-DR4+ (400G)

    QT-Q112-400G-DR4+

    QT-QSFP28-FR1

    QT-QSFP-DD-FR4 (400G)

    QT-Q112-400G-FR4

    QT-OSFP-400G-FR4

    QT-QSFP-DD-LR4 (400G)
    QT-OSFP-400G-LR4

    		  

    Application

    800G to 800G, 800G to 2x400G breakout, 800G to 8x100G breakout

    800G to 800G, 800G to 2x400G breakout

    800G to 800G, 800G to 2x400G breakout

    		  

     

    Questions & Answers

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    Customer Reviews

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    5 stars

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    • ALL (17)
    • Premium Service (2)
    • Customer Support (1)
    • Excellent Quality (2)
    • Good Price (2)
    • Shopping Experience (4)
    • Good Packaging (3)
    • Stable (2)
    • Compatibility (5)
    • High Performance (2)
    • Nathan United States of America
      2026-06-12

      Buying was a breeze. Price is stupid cheap for 800G dual-port DR4. Works like a charm in my Arista gear. I'm coming back for more.

      Transceivers typeAR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Dora Lindsay United States of America
      2026-06-10

      We've run this 2DR4 through several business cycles, including capacity expansion and traffic switching. A notable point is its consistent performance across different stages; there haven't been any sudden periods of instability. Many module issues don't surface immediately after deployment but only after running for a while, and we haven't seen any similar signs yet. Overall, it's the type of system that "remains less worrisome the longer you use it."

      Transceivers typeAR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Isaac United States of America
      2026-06-05

      Packaging was professional and secure. We didn't encounter a single damaged item in the shipment.

      Transceivers typeAR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Olivia Tommy United States of America
      2026-06-04

      We use this 2DR4 for single-mode connections of several hundred meters between different racks on the same floor. It has consistently worked normally and doesn't frequently appear in troubleshooting. The link remains stable during continuous high-volume data synchronization, with no noticeable retransmissions or retraining observed.

      Transceivers typeAR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Alice Hudson United States of America
      2026-05-27

      I bought this from qsfptek last month, and now I'm back to share my honest thoughts. You can tell they're still growing, but compared to other vendors I've dealt with, they're really genuine. They do full testing, and their customer support is super kind.

      Transceivers typeAR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • William W. United States of America
      2026-05-23

      Way cheaper than what other places charge, and the sales rep was super nice. Really enjoyed shopping here. Planning to try out the 400G optics next month.

      Transceivers typeAR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Walter Leopold United States of America
      2026-05-22

      This DR4 is installed in our data center, which does GPU interconnection. Traffic is consistently high, but the link status has always been clean, without any inexplicable flaps or alarms.

      Transceivers typeAR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Cary United States of America
      2026-05-22

      A very pleasant shopping experience with great prices and product quality.

      Transceivers typeAR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Olga Huxley United States of America
      2026-05-20

      Installation was pretty uneventful, which is actually a good thing. Link came up immediately and stayed stable during overnight traffic testing.

      Transceivers typeAR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Seamas United States of America
      2026-05-19

      We tested these in a high-traffic environment and the performance has been very consistent. The modules were recognized immediately, and MPO connectivity stayed stable throughout deployment.

      Transceivers typeAR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    Resources

    • PDF Document
      Transceiver Module User Guide.pdf
    • PDF Document
      QT-QSFP-DD-800G-2DR4 Datasheet.pdf
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    Arista Compatible 800GBASE-2DR4 Twin-port QSFP-DD PAM4 1310nm 500m Dual MTP/MPO-12 APC SMF Optical Transceiver Module

    Compatible Arista

    Transceivers type AR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

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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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    Arista Compatible 800GBASE-2DR4 Twin-port QSFP-DD PAM4 1310nm 500m Dual MTP/MPO-12 APC SMF Optical Transceiver Module
    US$ 1,034.90
    Compatible
    Arista
    Transceivers type
    AR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC
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    Bulk Order Quotes
    Arista Compatible 800GBASE-2DR4 Twin-port QSFP-DD PAM4 1310nm 500m Dual MTP/MPO-12 APC SMF Optical Transceiver Module

    Compatible Arista

    Transceivers type AR-QSFP-DD-800G-2DR4 | 500m | Dual MPO-12/APC

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