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    Home / Products / Transceivers / Direct Attach Cables (DACs) / 40G QSFP+ DAC / 99115

    3M Cisco QSFP-H40G-CU3M Compatible 40G QSFP+ Passive Direct Attach Copper Cable

    Product No: 99115
    3 Reviews
    448 Sold
    US$ 24.50
    Compatible
    Transceivers type
    234 in real-time stock, 09 Jun, 2026
    Delivered in 5 business days in the U.S.
    5-Year Warranty 30-Day Returns 90-Day Exchange
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    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
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    Add to Cart Bulk Order Quotes 
    1. 40G QSFP+ to QSFP+ Connetor
2. Low Latency and Power Consumption
3. Compatible with 200+ Vendors
4. Applied in 40G Ethernet Hub, Switches, Routers and Servers, etc.
5. QSFP+ MSA Compliant
    See more

    Specifications

    Cisco QSFP-H40G-CU3M Compatible 40G QSFP+ DAC Twinax Copper Cable (3 meters, Passive, QSFP+ to QSFP+)

     

    The 40G QSFP+ passive copper direct-attach cable (DAC) is Cisco QSFP-H40G-CU3M fully compatible. It is a Twinax copper cable with fixed QSFP+ form factor modules terminated on both ends. This 40G QSFP+ DAC is verified to interoperate with original Cisco switches, including the Catalyst 3650/3560X/3850/6800/8500/9200/9300/9300L/9300X/9350/9400/9400X/9500/9600/9610/9800 and Nexus 3000/5000/6000/9200/9300/9500/9800 series. Given that the QSFP+ is pre-attached to each end, the 40G DAC cable features convenient installation.

     

    QSFP+ to QSFP+ 40G DAC cable is suitable for very short-distance transmission. It provides a cost-effective and low-power consumption way to build a 40Gb link between QSFP ports of switches or routers with racks and across adjacent racks.

     

    Part Number QT-QSFP-PC3 Vendor Name QSFPTEK
    Connector Type QSFP+ to QSFP+ Data Rate 40 Gbps
    Minimum Bend Radius 33mm Wire AWG 30AWG
    Cable Length 3m Cable Jacket PVC (OFNR)

     

    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. 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 server-to-switch connections.
    • 3. Protocols
      Compliant with QSFP+ MSA, InfiniBand SDR/DDR/QDR, IEEE802.3ba and SFF-8436.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

    Connection 1: 40G Switch to 40G Switch Direct Connectivity

    Connection 1: 40G Switch to 40G Switch Direct Connectivity

    Connection 2: 40G Switch to 40G NIC Direct Connectivity

    Connection 2: 40G Switch to 40G NIC 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.

                                 

    QSFPTEK Test Devices

               

           

    40G QSFP+ Cables Contrast Table

       

    Part Number QT-QSFP-PCx QT-QSFP-ACx QT-Q4S-PCx QT-QSFP-Ax QT-Q4S-Ax
    Image
    Cable Type Passive Direct Attach Copper Active Direct Attach Copper Passive Direct Attach Copper Breakout Active Optical Cable Active Optical Cable Breakout
    Max Data Rate 40Gbps 40Gbps 40Gbps 40Gbps 40Gbps
    Connector Type QSFP+ to QSFP+ QSFP+ to QSFP+ 40G QSFP+ to 4x10 SFP+ QSFP+ to QSFP+ 40G QSFP+ to 4x10 SFP+
    Wire AWG 30AWG 30AWG 30AWG / /
    Minimum Bend Radius 33mm 33mm 21mm 7.5mm 7.5mm
    Media Copper Copper Copper Optic Fiber Optic Fiber
    Jacket Material PVC (OFNR) PVC (OFNR) PVC (OFNR) LSZH LSZH

    Questions & Answers

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    • ALL (3)
    • Premium Service (1)
    • Customer Support (1)
    • Excellent Quality (1)
    • Stable (1)
    • High Performance (1)
    • Carlos Hemlas Australia
      2022-04-12

      It is very convenient to use, the pull-tabs at both ends are designed, it is easy to insert and pull out, the sales are very responsible, and the test situation is followed up after receiving the goods.

      Transceivers typeQSFP-H40G-CU3M

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Carlos Hemlas Australia
      2022-04-12

      It is very convenient to use, the pull-tabs at both ends are designed, it is easy to insert and pull out, the sales are very responsible, and the test situation is followed up after receiving the goods.

      Transceivers typeQSFP-H40G-CU3M

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Pual United States of America
      2021-12-14

      These DAC cables were used to stack a pair of ms-225s in a wiring closet and they came up perfectly after running some more tests. I have recommended them to all my clients. If you don't want to spend the extra money on optical cables and don't need to run long distances, this is a pretty good cable.

      Transceivers typeQSFP-H40G-CU3M

      CompatibleCisco

      Verified Purchase

      Helpful

      1

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    Resources

    • PDF Document
      QT-QSFP-PCx.pdf
    Check Test Reports on Target Device
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    3M Cisco QSFP-H40G-CU3M Compatible 40G QSFP+ Passive Direct Attach Copper Cable

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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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    8

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    3M Cisco QSFP-H40G-CU3M Compatible 40G QSFP+ Passive Direct Attach Copper Cable
    US$ 24.50
    Compatible
    Cisco
    Transceivers type
    QSFP-H40G-CU3M
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    Bulk Order Quotes
    3M Cisco QSFP-H40G-CU3M Compatible 40G QSFP+ Passive Direct Attach Copper Cable

    Compatible Cisco

    Transceivers type QSFP-H40G-CU3M

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