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    Home / Products / Transceivers / Direct Attach Cables (DACs) / 400G DAC / 103663

    1.5m (5ft) Generic Compatible 400G QSFP-DD to 8x 50G SFP56 Passive Twinax Direct Attach Copper (DAC) Breakout Cable

    Product No: 103663
    0 Reviews
    9 Sold
    US$ 233.90
    Compatible
    Transceivers type
    82 in real-time stock, 04 Jun, 2026
    Delivered in 5 business days in the U.S.
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    1. Tested in Host Devices for compatibility and performance	
2. Low power consumption, low crosstalk. 
3. Cost-effective 400G to 8x 50G interconnect solution
4. Support for hot pluggable QSFP-DD MSA Compliant
5. Ideal for data center short-range connection between servers, switches, etc.
    See more

    Specifications

    Generic Compatible 400G QSFP-DD to 8x 50G SFP56 Twinax DAC Cable (1.5m, Passive, 0-70°C, 400G QSFP-DD to 8 x 50G SFP56)

                

    Generic compatible 400G QSFP-DD to 8x 50G SFP56 passive cable component product, based on 8x 50G structure, can well meet the requirements of the next generation 400G switch, server, router and other products.

               

    The 400g QSFP-DD cable assembly adopts optimized design to reduce crosstalk and insertion loss, has excellent signal integrity, and fully conforms to the next generation 400G Ethernet and Infiniband EDR standards.

                 

    SFP56 is based on the same shape of SFP+, supports 25G NRZ or 50G PAM4 Ethernet standard, can provide 25Gb/s error free transmission, and can be applied to high-density 25G Ethernet switches and network interfaces to promote server connection in data center. It adopts the current popular form factor of SFP +, which provides a more cost-effective solution for enterprises to upgrade 25G Ethernet connection.

                        

    400G QSFP DD to 8x 50G SFP56 supports interconnection of two interface devices, with single channel transmission rate of 25Gbps (NRZ) or 50Gbps (PAM4).

                       

    Part Number QT-400G-Q4Q56-P1.5M Vendor Name QSFPTEK
    Connector Type OSFP-DD to 8x SFP56 Data Rate 400Gb/s to 8 x 50Gb/s
    Minimum Bend Radius 39.5mm Wire AWG 30AWG
    Cable Length 1.5m (5ft) Jacket Material PVC
    Cable Type Passive Twinax Media Copper
    Power Consumption ≤0.1W Temperature 0 to 70°C (32 to 158°F)
    Protocols SFF-8636, SFF-8402, IEEE802.3bj, IEEE 802.3cd, QSFP-DD MSA Modulation PAM4
    Quality Testing Program
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    Features

    • 1. High Reliablility and Best Price
      Proudly self-producing and rigorous testing, QSFPTEK is dedicated to delivering cost-effective products with high reliability and performance at trade price.
    • 2. Wide Application Scenarios
      Ideal for ToR, adjacent racks, and short-range 400G to 50G Ethernet connections.
    • 3. Protocols
      Compliant with SFF-8636, SFF-8402, IEEE802.3bj, IEEE 802.3cd, QSFP-DD MSA
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

    400G to 50G Direct Connectivity:

    QT-400G-Q8S56-PxM 400G to 50G Direct Connectivity

     

    Product details

    Various Switch Tests

      

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

         

    QSPFTEK LAB All Brands Switches Show

     

    Tested in The Host Device to Prove Interoperability

      

    Every unit sold undergoes rigorous quality testing, to ensure compatibility in the target switch environment, guaranteeing perfect operation.

                                                              

    QSFPTEK Test Rack

     

    Comprehensive Testing

     

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

                                 

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      QT-400G-Q8S56-PxM Datasheet.pdf
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    1.5m (5ft) Generic Compatible 400G QSFP-DD to 8x 50G SFP56 Passive Twinax Direct Attach Copper (DAC) Breakout Cable

    Compatible Generic

    Transceivers type QT-400G-Q8S56-P1.5M

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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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    1.5m (5ft) Generic Compatible 400G QSFP-DD to 8x 50G SFP56 Passive Twinax Direct Attach Copper (DAC) Breakout Cable
    US$ 233.90
    Compatible
    Generic
    Transceivers type
    QT-400G-Q8S56-P1.5M
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    Bulk Order Quotes
    1.5m (5ft) Generic Compatible 400G QSFP-DD to 8x 50G SFP56 Passive Twinax Direct Attach Copper (DAC) Breakout Cable

    Compatible Generic

    Transceivers type QT-400G-Q8S56-P1.5M

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