High-Speed Direct Attach Copper Cables

    Learn about direct attach copper (DAC) cables and splitters for GPU-accelerated computing.
    CablesTEC’s Direct Attach Copper Cable (DAC) is the lowest cost solution for creating 10G-800G high-speed interconnect links for server/switch networks. DACs are widely used in data centers to connect servers and GPU computing systems to top-of-rack (TOR) switches for short distances within or between racks.
    Designed by the GIGALIGHT R&D team and manufactured by CablesTEC’s Yancheng factory, each cable has undergone rigorous performance testing. COM parameters and S parameters are much higher than industry standards, providing the best signal integrity for data center server networks.

    Lowest Cost, Power and Latency

    CablesTEC ensures the best signal integrity and best end-to-end performance by testing each DAC cable in a real network, with a bit error rate (BER) lower than the IEEE industry standard, perfect for very stringent requirements Supercomputers and hyperscale systems.
    • Customized length options (from 0.5m to 15m)
    • Various SFP options (SFP+/SFP28/SFP56)
    • Various QSFP options (QSFP+/QSFP28/QSFP56/QSFP112)
    • Various QSFP-DD options (QSFP28-DD/QSFP56-DD/QSFP112-DD)
    • Various modulation options (10G/25G NRZ and 50G/100G PAM4)
    Note: The 25G NRZ-based low-loss DAC supports IEEE CA-N and CA-L specifications, and does not require FEC when used within a range of less than 2 meters, which can reduce latency and power consumption.

    1×1 Series

    P/NApplicationsEnd 1End 2Max. Length
    GQD-PC801-(D)xxC800GE/NDR1x 800G QSFP-DD1x 800G QSFP-DD1.8m
    GQS-PC401-(D)xxC400GE/NDR1x 400G QSFP1121x 400G QSFP1122m
    GQD-PC401-(D)xxC400GE/HDR1x 400G QSFP-DD1x 400G QSFP-DD3m
    GQS-PC201-(D)xxC200GE/HDR1x 200G QSFP561x 200G QSFP563m
    GSS-PC560-(D)xxC50GE/HDR1x 50G SFP561x 50G SFP563m
    GQD-PC201-(D)xxC200GE/EDR1x 200G QSFP-DD1x 200G QSFP-DD5m
    GQS-PC101-(D)xxC100GE/EDR1x 100G QSFP281x 100G QSFP285m
    GPP-PC250-(D)xxC25GE/EDR1x 25G SFP281x 25G SFP285m
    GQS-PC560-(D)xxC4x16GFC/FDR1x 56G QSFP+1x 56G QSFP+5m
    GQS-PC400-(D)xxC40GE/QDR1x 40G QSFP+1x 40G QSFP+5m
    GPP-PC192-xx(D)xxC10GE/QDR1x 10G SFP+1x 10G SFP+7m

    800G/400G/200G QSFP-DD DAC

    400G/200G/100G/56G/40G QSFP DAC

    100G/50G/25G/10G SFP DAC

    1×2/4/8 Series

    P/NApplicationsEnd 1End 2Max. Length
    GQD-2QP801-(D)xxC800GE/400GE/NDR1x 800G QSFP-DD2x 400G QSFP1121.8m
    GQD-4QP801-(D)xxC800GE/200GE/NDR1x 800G QSFP-DD4x 200G QSFP1121.8m
    GQD-8QP801-(D)xxC800GE/100GE/NDR1x 800G QSFP-DD8x 100G QSFP1121.8m
    GQS-2QP401-(D)xxC400GE/200GE/NDR1x 400G QSFP1122x 200G QSFP1122m
    GQD-2QP401-(D)xxC400GE/200GE/HDR1x 400G QSFP-DD2x 200G QSFP563m
    GQD-4QP401-(D)xxC400GE/100GE/HDR1x 400G QSFP-DD4x 100G QSFP563m
    GQD-8SP401-(D)xxC400GE/50GE/HDR1x 400G QSFP-DD8x 50G SFP563m
    GQS-2QP201-(D)xxC200GE/100GE/HDR/HDR1001x 200G QSFP562x 100G QSFP563m
    GQS-4P56-P(D)xxC200GE/50GE/HDR1x 200G QSFP564x 50G SFP563m
    GQD-2QP201-(D)xxC200GE/100GE/EDR1x 200G QSFP-DD2x 100G QSFP285m
    GQD-4QP201-(D)xxC200GE/50GE/EDR1x 200G QSFP-DD4x 50G QSFP285m
    GQD-8SP201-(D)xxC200GE/25GE/EDR1x 200G QSFP-DD8x 25G SFP285m
    GQS-PC101-(D)xxC100GE/50GE/EDR1x 100G QSFP282x 50G QSFP285m
    GQS-4P28-P(D)xxC100GE/25GE/EDR1x 100G QSFP284x 25G SFP285m
    GQS-4SFP+PC-(D)xxC40GE/10GE/QDR1x 40G QSFP+4x 10G SFP+5m

    800G/400G/200G/100G to 2x
    400G/200G/100G/50G DAC

    800G/400G/200G/100G/40G to 4x
    200G/100G/50G/25G/10G DAC

    800G/400G/200G to 8x
    100G/50G/25G DAC

    Low-Cost High-Speed DAC Interconnects
    The recent rapid growth in data center traffic and cloud computing has resulted in a massive increase in machine-to-machine traffic due to the rapid adoption of server virtualization, SDN, and cloud computing. Now, add the massive amounts of bandwidth required to train terabyte-scale data networks for training (GPU)-based artificial intelligence machine learning systems. This drives huge demand for high bandwidth and low latency networks. High-speed DAC interconnects with low cost advantages play a key role in these modern data center technologies.