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    Home / Products / Transceivers / 100G/200G Transceivers / 100G QSFP28 / 67915

    Cisco QSFP-100G-ZR4-S Compatible 100GBASE-ZR4 QSFP28 1310nm 80km LC Duplex SMF DDM Optical Transceiver Module

    Product No: 67915
    21 Reviews
    1.3K Sold
    US$ 1,599.90  US$ 3,499.00
    Compatible
    Transceivers type
    169 in real-time stock, 10 Jun, 2026

    Free Shipping over US$ 79.8

    Global warehouses in stock

    30-day Return and Refund

    5-Year Warranty 30-Day Returns 90-Day Exchange
    Warranty
    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
    Returns & Exchange
    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.
    Please check our Return Policy for details.
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    Add to Cart Bulk Order Quotes 
    1. Rate: 100G; Connector: LC; with DDM
2. EML+SOA/PIN; Low Power Consumption ≤5.5W
3. Applied in Campus Network, Data Center and Enterprise Core Layer
4. Compatible with 200+ Vendors
5. Hot Pluggable QSFP28 MSA Compliant
    See more

    Specifications

    Cisco QSFP-100G-ZR4-S Compatible 100GBASE-ZR4 QSFP28 Optical Transceiver Module (SMF, 1310nm, 80km, LC, DDM)

     

    The Cisco QSFP-100G-ZR4-S compatible optical transceiver module is designed with duplex LC connectors, reaching a link up to 80km over single-mode fiber(OS2). QSFPTEK manufactured 100G ZR4 QSFP28 80km transceiver module is compliant with QSFP28 MSA Compliant standard. Besides, DDM (digital diagnostics monitoring) function is supported on the 100G fiber optic transceiver to achieve real-time operating parameters monitoring. With these features, this 100G QSFP28 ZR4 transceiver is widely applied in 100G telecom connections, DCI, metro network, long-haul, and high-performance computing networks application.

     

    Part Number:

    QT-QSFP28-ZR4

    Vendor Name:

    QSFPTEK

    Form Factor:

    QSFP28

    Data Rate:

    103.125Gbps (4x 25.78Gbps)

    Wavelength:

     1295~1310nm

    Distance:

    8[email protected]

    Connector:

    Duplex LC

    Cable Type:

    OS2 SMF

    Transmitter:

    EML

    Receiver Type:

    SOA+PIN

    TX Power:

    +2 ~ +7dBm

    Receiver Sensitivity:

    <-27dBm

    Power Consumption:

    ≤5.5W

    Modulation Format:

    NRZ

    DDM:

    Support

    Bit Error Ratio (BER):

    5E-5

    Protocols: 

    QSFP28 MSA, SFF-8636

    Warranty:

    5 Years
    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
      Each module that goes into stock has been fully tested on host devices for compatibility. Test before shipment further guarantees product availability. Quality product & service at a competitive price is our pursuit.
    • 2. Wide Application Scenarios
      Fully compatible with almost all Cisco devices. Ideal for 100G telecom connections, DCI, metro network, Long-Haul, etc.
    • 3. Protocols
      Compliant with QSFP28 MSA Compliant.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

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

    QT-QSFP28-ZR4 1 100G Switch to 100G Switch Direct Connectivity

     

     

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

    QT-QSFP28-ZR4 2 100G Switch to 100G NIC Direct Connectivity

    Product details

    Various Switch Tests

     

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

     

     

     

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

     

    QSFP28 ZR4 performance Test in various devices

     

     

    100G QSFP28 Model Contrast Table

            

    Part Number

    QT-QSFP28-SR4

    QT-QSFP28-PSM4

    QT-QSFP28-IR4

    QT-QSFP28-LR4

    QT-QSFP28-CWDM-LR4

    QT-QSFP28-ER4 (Rx SOA)

    QT-QSFP28-ZR4

    Image

    Wavelength

    850nm

    1310nm

    1271~1331nm

    1310nm

    1271~1331nm

    1310nm

    1310nm

    Max Distance

    100m

    500m

    2km

    10km

    10km

    40km

    80km

    Cable Type

    OM3/OM4 MMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    Connector

    MPO/MTP-12

    MPO/MTP-12

    LC Duplex

    LC Duplex

    LC Duplex

    LC Duplex

    LC Duplex

    Tx Power(dBm)

    -8.4~+2.4

    -9.4~+2

    -6.5~+2.5

    -4.3~+4.5

    -6.5~+2.5

    -2.9~+4.5

    +2~+7

    Rx Sensitivity(dBm)

    -10.3

    -12.66

    -11.5

    -10.6

    -11.5

    -20.9

    -27

    Max Power Consumption

    2.5W

    3.5W

    3.5W

    4W

    3.5W

    5W

    5.5W

    Source

    VCSEL+PIN

    DFB+PIN

    CWDM DFB+ PIN

    EML+PIN

    CWDM DFB +PIN

    4x EML+SOA+PIN

    EML+SOA+PIN

    Operating Temperature

    0~70°C

    0~70°C

    0~70°C

    0~70°C

    -40~85°C (Available)

    0~70°C

    0~70°C

    -20~85°C (Available)

    0~70°C

    -40~85°C (Available)

     

    Questions & Answers

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    Customer Reviews

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    • ALL (18)
    • Premium Service (3)
    • Customer Support (2)
    • Excellent Quality (5)
    • Good Price (5)
    • Shopping Experience (2)
    • Plug-and-Play (4)
    • Good Packaging (1)
    • High Reliability (2)
    • Fast Delivery (1)
    • Compatibility (3)
    • High Performance (3)
    • Noel Robinson United States of America
      2026-04-17

      Stable 100GBASE-ZR4 module for long-distance links (~70km), works as expected with solid performance, just runs a bit warm so proper airflow is important.

      Transceivers typeQSFP-100G-ZR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Dolores Jessie United States of America
      2026-03-12

      We’ve been using this 100GBASE-ZR4 module for a while on a long-distance link, and it has been running steadily so far. The link came up right after installation and hasn’t needed any extra adjustments. Monitoring shows stable optical levels and low error rates during daily operation. Overall, it has been a reliable option for 100G long-reach connections.

      Transceivers typeQSFP-100G-ZR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Ken Ann United States of America
      2026-01-09

      The QSFP28 ZR4 module is ideal for ultra-long-reach applications. After installation, the link establishes a stable connection and maintains consistent signal quality over time. Monitoring shows low error rates and consistent optical output, even with extended fiber runs.

      Transceivers typeQSFP-100G-ZR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Deirdre Leopold United States of America
      2025-10-31

      We used this 100GBASE-ZR4 module with Cisco switches for long-distance links of approximately 80 kilometers. It delivered exceptional stability and outstanding signal quality with virtually no bit errors. The module's thermal management is well-controlled, and it is fully compatible and plug-and-play. Overall, this is a reliable, cost-effective, long-distance transmission solution.

      Transceivers typeQSFP-100G-ZR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Hamiltion Ruth United States of America
      2025-09-26

      We bought this 100GBASE-ZR4 module for our backbone upgrade, and it has performed very reliably. The 80 km reach works exactly as advertised and we have had no compatibility issues across different switches. A solid 5-star choice for long-haul connections.

      Transceivers typeQSFP-100G-ZR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Griselda Stilwell United States of America
      2025-08-29

      This QSFP28 ZR4 optical module is a reliable choice for long-distance transmission, offering excellent compatibility and consistent performance. It's recognized right away and starts working as soon as you plug it in. Thermal management is on point, with barely any speed drops or interruptions during operation.

      Transceivers typeQSFP-100G-ZR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Porter Charles United States of America
      2025-08-15

      It works much better than I thought it would. It keeps a steady speed even when you're going at full speed. Installing it was very fast—just slide it in and it's ready to use. The label text is a bit small, which isn't ideal when you're swapping gear quickly, but that's a minor issue. It's definitely worth it for long-distance backbone links.

      Transceivers typeQSFP-100G-ZR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Zora Alice United States of America
      2025-08-01

      Tested over 80km SMF with consistent 100G throughput and low BER. DOM readouts were stable, and it integrated perfectly with Juniper switches. No need for EDFA in our setup. Excellent alternative to OEM modules—same performance at a fraction of the price. Definitely recommended for long-haul deployments.

      Transceivers typeQSFP-100G-ZR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Dorothy Ford Australia
      2025-07-18

      It provides stable performance of up to 80 km with low latency. It is easy to deploy and is compatible with Cisco switches. Perfect for long-distance backbone upgrades without signal loss.

      Transceivers typeQSFP-100G-ZR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Tom Burns United States of America
      2025-05-27

      Have been using this 100GBASE-ZR4 module for a few weeks now and it is running well with stable rates. However, in addition to the hardware, the documentation support and configuration manual could still be optimized, in my opinion. All in all, this is a very reliable module and the overall performance is good for its price.

      Transceivers typeQSFP-100G-ZR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    Resources

    • PDF Document
      QT-QSFP28-ZR4 Datasheet.pdf
    • PDF Document
      Transceiver Module User Guide.pdf
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    Cisco QSFP-100G-ZR4-S Compatible 100GBASE-ZR4 QSFP28 1310nm 80km LC Duplex SMF DDM Optical Transceiver Module

    Compatible Cisco

    Transceivers type QSFP-100G-ZR4-S

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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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    Cisco QSFP-100G-ZR4-S Compatible 100GBASE-ZR4 QSFP28 1310nm 80km LC Duplex SMF DDM Optical Transceiver Module
    US$ 3,499.00
    Compatible
    Cisco
    Transceivers type
    QSFP-100G-ZR4-S
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    Bulk Order Quotes
    Cisco QSFP-100G-ZR4-S Compatible 100GBASE-ZR4 QSFP28 1310nm 80km LC Duplex SMF DDM Optical Transceiver Module

    Compatible Cisco

    Transceivers type QSFP-100G-ZR4-S

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