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    Home / Products / Transceivers / Direct Attach Cables (DACs) / 100G QSFP28 DAC / 99226

    0.5M Cisco QSFP-100G-CU0.5M Compatible 100G QSFP28 Passive Direct Attach Copper Twinax Cable

    Product No: 99226
    9 Reviews
    866 Sold
    US$ 25.00  US$ 30.88
    Compatible
    Transceivers type
    415 in real-time stock, 24 Jun, 2026
    Delivered in 5 business days in the U.S.
    5-Year Warranty 30-Day Returns 90-Day Exchange
    Warranty
    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
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    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.
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    Add to Cart Bulk Order Quotes 
    1. 100G QSFP28 to QSFP28 Connetor
2. Low Latency and Power Consumption
3. Compatible with 200+ Vendors
4. Applied in 100G Ethernet Hub, Switches, Routers and Servers, etc.
5. QSFP28 MSA Compliant
    See more

    Specifications

    Cisco QSFP-100G-CU0.5M Compatible 100G QSFP28 Direct Attach Cable (DAC) Twinax Cable (0.5-meter, Passive, QSFP28 to QSFP28)

     

    Cisco QSFP-100G-CU0.5M compatible 100G QSFP28 DAC is comprised of a Twinax copper cable terminated with QSFP28 form factor modules on both ends. It is verified to interoperate with original Cisco switches, including the Catalyst 9400, 9500, 9600 and the Nexus 9200, 9300, 9500, 3000 series. 100G DAC cable has the advantage of convenient installation since the structure of modules is permanently attached to each end.

     

    QSPF28 to QSFP28 100G DAC cable is suitable for very short-distance transmission. It provides a cost-effective and low power consumption way to build a 100Gb link between QSFP28 ports of switches or routers with racks and across adjacent racks.

    Part Number

    QT-Q28-PC0.5

    Vendor Name

    QSFPTEK

    Connector Type

    QSFP28 to QSFP28

    Data Rate

    100Gbps

    Minimum Bend Radius

    33mm

    Wire AWG

    30AWG

    Cable Length

    0.5M

    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 QSFP28 MSA, IEEE802.3bj and 100GEBASE-CR.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

    Connection 1: 100G Switch to 100G Switch Direct Connectivity

    100G DAC Switch Direct Connectivity

      

             

    Connection 2: 100G Switch to 100G NIC Direct Connectivity

    100G DAC 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

             

    100G QSFP28 Cables Contrast Table

           

    Part Number QT-Q28-PCx QT-Q28-4S28-PCx QT-Q28-Ax QT-Q28-4S28-Ax
    Image
    Cable Type Passive Direct Attach Copper Passive Direct Attach Copper Breakout Active Optical Cable Active Optical Cable Breakout
    Max Data Rate 100Gbps 100Gbps 100Gbps 100Gbps
    Connector Type QSFP28 to QSFP28 100G QSFP28 to 4x25 SFP28 QSFP28 to QSFP28 100G QSFP28 to 4x25 SFP28
    Wire AWG 30AWG 30AWG / /
    Minimum Bend Radius 33mm 25mm 7.5mm 7.5mm
    Media Copper Copper Optic Fiber Optic Fiber
    Jacket Material PVC (OFNR) PVC (OFNR) LSZH LSZH

    Questions & Answers

    Customer Reviews

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    5 stars

    8 Reviews

    4 stars

    1 Reviews

    3 stars

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    0 Reviews

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    • ALL (9)
    • Premium Service (2)
    • Excellent Quality (3)
    • Good Price (1)
    • Plug-and-Play (1)
    • Batch Order Discount (1)
    • Good Packaging (1)
    • Repurchse (1)
    • After-sales (1)
    • Compatibility (1)
    • Fast Delivery (1)
    • High Performance (1)
    • Kerr Joyce United States of America
      2025-09-19

      This QSFPTEK 100G DAC cable worked perfectly with our servers. It's very fast and almost instant. It's a great solution for short, high-speed connections.We bought this 100G LR4 module to upgrade our data center. Installation was smooth, and it worked perfectly with Cisco switches. I'm very happy with my purchase, but the delivery took a little longer than I expected.

      Transceivers typeQSFP-100G-CU0.5M

      CompatibleCisco

      Verified Purchase

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      0

    • Gary United States of America
      2024-11-08

      I wasn’t sure how to choose the right DAC cable for my network, so I reached out to customer support. They recommended one that was in stock in the U.S., and the cable arrived quickly.

      Transceivers typeQSFP-100G-CU0.5M

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Shawn United States of America
      2024-10-11

      I’m extremely pleased with the performance of this cable. From the moment I connected it to my networking equipment, everything worked well. There were no hiccups or interruptions during data transfer, allowing for smooth communication between devices.

      Transceivers typeQSFP-100G-CU0.5M

      CompatibleCisco

      Verified Purchase

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      0

    • Emma MacMillan United States of America
      2023-04-21

      The price is proportional to the quality, I believe this is a good choice and will buy again.

      Transceivers typeQSFP-100G-CU0.5M

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Terrell United States of America
      2023-02-15

      For the connection of 100G core layer equipment in the rack, we considered using 100G-SR4 modules, but Wendy recommended that we use 100G DAC cables, which reduces costs and improves durability. Thanks to her advice, we saved 40% of our budget.

      Transceivers typeQSFP-100G-CU0.5M

      CompatibleCisco

      Helpful

      0

    • Daisy Jim United States of America
      2023-01-10

      Compared with transceivers, I prefer DACs. For lazy people like me, plugging in cables is too troublesome. I am very satisfied with qsfptek's DACs!

      Transceivers typeQSFP-100G-CU0.5M

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Deirdre Leopold United States of America
      2022-12-09

      This DAC is the best one I have used so far, great product, will continue to support.

      Transceivers typeQSFP-100G-CU0.5M

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Pearl V United States of America
      2022-11-10

      The quality of the cables is very good, the same as what we get from other high-end brands.

      Transceivers typeQSFP-100G-CU0.5M

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Margaret Terry United States of America
      2022-09-29

      I used to buy a lot of 10G and 40G DAC/AOC cables from QSFPTEK for my switch room and they always did a great job. My 100G DAC sample order also works fine.

      Transceivers typeQSFP-100G-CU0.5M

      CompatibleCisco

      Verified Purchase

      Helpful

      0

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    Resources

    • PDF Document
      QT-Q28-PCx Datasheet.pdf
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    0.5M Cisco QSFP-100G-CU0.5M Compatible 100G QSFP28 Passive Direct Attach Copper Twinax Cable

    Compatible Cisco

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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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    0.5M Cisco QSFP-100G-CU0.5M Compatible 100G QSFP28 Passive Direct Attach Copper Twinax Cable
    US$ 30.88
    Compatible
    Cisco
    Transceivers type
    QSFP-100G-CU0.5M
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    0.5M Cisco QSFP-100G-CU0.5M Compatible 100G QSFP28 Passive Direct Attach Copper Twinax Cable

    Compatible Cisco

    Transceivers type QSFP-100G-CU0.5M

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