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  • 400G QSFP DD
  • 400G QSFP DD
  • 400G QSFP DD
  • 400G QSFP DD

400G QSFP-DD DAC Cable, Passive, 0.5~2.5 meters

SKU: CAB-Q400/Q400-P SKU1: CAB-Q400/Q400-P

Availability: In stock

Volume Price: Inquire
  • Model: CAB-Q400/Q400-P
  • CPN: CAB-Q400/Q400-P
● 400G QSFP-DD
● Length: 0.5~2.5 meters
● Passive
● 30/26AWG

● Compatible with Mellanox Ethernet【N201905030002】
  • 0.5 meter
  • 1 meter
  • 1.5 meter
  • 2 meter
  • 2.5 meter
Compatible Option
  • "OEM code"
  • Mellanox Ethernet

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Product Description Shipping & Payment Customer Reviews


10Gtek’s 400G QSFP-DD DAC cable primarily enables high-bandwidth 400G links and supports 400G Ethernet rate. It provides a QSFP-DD-to-QSFP-DD copper direct-attach solution. 400G QSFP-DD DAC cables are suitable for very short links and offer a cost-effective way to establish a 400-Gigabit link between QSFP-400G ports of switches/routers within racks and across adjacent racks. 10Gtek currently offers passive copper cables in lengths of 0.5, 1, 1.5, 2 and 2.5 meters.

  • Backward compatible with QSFP+ and QSFP28 modules
  • Length: 0.5~2.5 meters
  • Passive
  • MCU
  • 30/26AWG
  • Low power consumption
  • Excellent EMI performance
  • Temp. Range (℃): 0~70
  • Applications:
  • Ethernet 40G, 100G, 200G, 400G
  • InfiniBand NDR, HDR, EDR, QDR
  • Rack-to-Rack, Shelf-to-Shelf Interconnect
  • TOR (Top of Rack)
  • Compliant:
  • Compliant to IEEE 802.3cd and IEEE 802.3bs
  • InfiniBand NDR, HDR, EDR, QDR
  • RoHS compliant
  • Order Information:
    P/N Description Passive
    AWG I2C
    CAB-QDD/QDD-P0.5M QSFP-DD DAC Cable, 0.5-Meter Passive 0.5 30 MCU
    CAB-QDD/QDD-P1M QSFP-DD DAC Cable, 1-Meter Passive 1 30 MCU
    CAB-QDD/QDD-P2M QSFP-DD DAC Cable, 2-Meter Passive 2 30 MCU
    CAB-QDD/2ZQP-P0.5M QSFP-DD to 2x 100G QSFP28 Copper Breakout Cable, 0.5-Meter Passive 0.5 30 MCU
    CAB-QDD/2ZQP-P1M QSFP-DD to 2x 100G QSFP28 Copper Breakout Cable, 1-Meter Passive 1 30 MCU
    CAB-QDD/2ZQP-P2M QSFP-DD to 2x 100G QSFP28 Copper Breakout Cable, 2-Meter Passive 2 30 MCU
    CAB-QDD/8ZSP-P1M QSFP-DD to 8x 25G SFP28 Copper Breakout Cable, 1-Meter Passive 1 30 MCU
    CAB-QDD/8ZSP-P2M QSFP-DD to 8x 25G SFP28 Copper Breakout Cable, 2-Meter Passive 2 30 MCU

    200G~400G DAC

    About 10Gtek CompanyWhat's Twinax Cable Assembly
    Shipping Methods

    Global Shipping

    Together with SFPcables, there is a Global Delivery from us like no others. We will not only delivery the correct shipment, but also for more things for an efficient and flexible way of business cooperation with our partners.
    SFPcables.com ship worldwide to nearly every country across the globe, covering North and South America, Europe, Asia, Africa, Oceania, and more. We employ the services of major, trusted international carriers to ensure your package arrives to your destination safely and securely.

    38 Country Free shipping

    Online orders exceed $800.00 to following countries can enjoy Free Shipping;
    Asia: Philippines, South Korea, Singapore, Brunei, Taiwan, Malaysia, Thailand, Japan, Indonisia, Indonesia, Kampuchea, Laos, Vietnam
    North America: United States, Canada, Mexico
    Oceania: Australia, New Zealand
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    Southern Europe: Slovenia, Greece, Spain, Portugal, San Marino, Italy
    Central Europe: Slovenia, Germany, Poland, Czech, Slovakia, Hungary, Austria, Switzerland
    Western Europe: Belgium, Britain, Ireland, Netherlands, Luxemburg, France
    Northern Europe: Sweden, Denmark, Finland, Norway

    Typically, we use DHL and UPS to deliver your goods. Shipping methods are not fixed, they may vary according to country location, order amount, customer requirements, etc.

    Payment Methods

    Payment methods available at SFPcables.com include:

    • PayPal and PayPal Express
    • Bank to bank wire transfers (T/T)
    • Western Union
    Warranty & Service

    Warranty Policy:

    Warranty Service Pack1*:     All 10Gtek's products share 1-year standard warranty.
    Warranty Service Pack2*:     Enhanced Item (Apply to Online order at SFPcables.com)

    DAC Cables (Passive) 3-Year Warranty
    DAC Cables (Active) 3-Year Warranty
    AOC Cable 3-Year Warranty
    Fiber Optic Transceivers 3-Year Warranty (1G, 10G)
    1.5-Year Warranty (25G, 40G, 100G, 200G)
    Switch, Convertors 1-Year Warranty
    NIC/CNA Cards 1-Year Warranty
    Optical System 1-Year Warranty
    Patch Cords 3-Year Warranty
    Power Adapter
    0.5-Year Warranty
    Consumer cable 3-Month

    15-Day money back Guarantee

    15-Day money back guarantee applies to all products sold by SFPcables.com provided that the items are new, undamaged, unmodified and in good resalable condition. If you are not satisfied with the product, you can apply return within 15 days.
    All freight charges, transaction costs (bank charge or Paypal cost, etc) are the responsibility of the customer.

    Returns are not acceptable if:
    1. The products are proved to have been abused, misused, replaced, repaired, or modified.
    2. After 15 days of delivery, returns are not acceptable. If the items are still under warranty period, customer could ask for repair or replacement. 
    3. No Return agreement was reached with a SFPcables.com sales representative before Returns.
    4. Return process is not done based on SFPcables.com Return instructions.



    The logos, products and/or company names referred to herein is for informational purposes only, merely indicating that 10Gtek’s products can be compatible with the mentioned products. The logo 10Gtek is a registered trademark of 10GTEK TRANSCEIVERS CO., LTD.

    10GTEK TRANSCEIVERS CO., LTD. All Rights Reserved.


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    400G QSFP-DD DAC Cable, Passive, 0.5~2.5 meters
    Free shipping on orders over $800.