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    Home / Products / Transceivers / 100G/200G Transceivers / 100G QSFP28 / 56984

    Cisco QSFP-100G-SR4-S Compatible 100GBASE-SR4 QSFP28 850nm 100m MTP/MPO-12 MMF DDM Optical Transceiver Module

    Product No: 56984
    160 Reviews
    18.9K Sold
    US$ 35.90  US$ 59.90
    Compatible
    Transceivers type
    1151 in real-time stock, 13 Jun, 2026

    Free Shipping over US$ 79.8

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    Warranty
    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
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    1. Rate: 100G; Connector: MTP/MPO; with DDM
2. VCSEL+PIN; Low Power Consumption ≤2.5W
3. Applied in Campus Network, Data Center and Enterprise Core Layer
4. Compatible with 100+ Vendors
5. Hot Pluggable QSFP28 MSA Compliant
    See more

    Specifications

    Cisco QSFP-100G-SR4-S Compatible 100GBASE-SR4 QSFP28 Optical Transceiver Module (MMF, 850nm, 100m, MTP/MPO, DDM)

     

    The Cisco QSFP-100G-SR4-S compatible optical transceiver module with MTP/MPO-12 male connectors reaches a link up to 100m over OM4 (70m@OM3). It is verified to interoperate with original Cisco switches, including the Catalyst 9400/9500/9600 and Nexus 9200/9300/9500/3000 series. This 100G SR4 QSFP28 optics also supports breakout to 4x25GBASE-SR SFP28 via MTP/MPO-8 to 4xLC duplex OM3/OM4 breakout cables. QSFPTEK manufactured 100GBASE-SR4 QSFP28 transceiver module is compliant with IEEE 802.3bm, QSFP28 MSA 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 transceiver is widely applied in data centers, campus networks, the enterprise core layer, etc.

     

    Part Number:

    QT-QSFP28-SR4

    Vendor Name:

    QSFPTEK

    Form Factor:

    QSFP28

    Data Rate:

    100Gbps

    Wavelength:

    850nm

    Distance:

    100m@OM4/70m@OM3

    Connector:

    MTP/MPO-12 Male

    Cable Type:

    OM4/OM3 MMF

    Transmitter:

    VCSEL 850nm

    Receiver Type:

    PIN

    TX Power:

    -8.4~+2.4dBm

    Receiver Sensitivity:

    <-10.3dBm

    Power Consumption:

    P≤2.5W

    Modulation Format:

    NRZ

    DDM:

    Support

    Bit Error Ratio (BER):

    1.00E-12

    Protocols: 

    IEEE 802.3bm, QSFP28 MSA, SFF-8665, SFF-8636, CPRI, eCPRI

    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
      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
      Fully compatible with almost all Cisco devices. Ideal for data centers, campus network, enterprise core layer, etc.
    • 3. Protocols
      Compliant with IEEE 802.3bm, QSFP28 MSA, SFF-8665, SFF-8636, CPRI, eCPRI.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

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

    QT-QSFP28-SR4 Scenario 1 100G Switch to 100G Switch Direct Connectivity

      

     

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

    QT-QSFP28-SR4 Scenario 2 100G Switch to 100G NIC Direct Connectivity 

     

    Scenario 3: 100G to 4x 25G Breakout Connectivity

    QT-QSFP28-SR4 Scenario 3 100G to 4x 25G Breakout Connectivity   

      

    Scenario 4: 100G to 4x 25G Breakout Connectivity with NIC

    QT-QSFP28-SR4 Scenario 4 100G to 4x 25G Breakout Connectivity with NIC

     

    Product details

    Various Switch Tests

     

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

     

    Switch tests

     

     

    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.

     

    QSFPTEK Test 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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    • Compatibility (30)
    • Adonis Silas United States of America
      2026-04-24

      Runs reliably over short MMF links with no compatibility issues so far, power readings look normal, just need to keep connectors clean to avoid occasional link drops.

      Transceivers typeQSFP-100G-SR4-S

      CompatibleCisco

      Verified Purchase

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      0

    • Denise Edith United States of America
      2026-04-03

      Tried this 100G SR4 module for a short-range connection between two switches in our rack. Hooked it up with an MPO fiber, and the link came up almost instantly. No tuning or extra steps needed. It’s been running for a while now with steady performance, no drops or weird latency spikes.

      Transceivers typeQSFP-100G-SR4-S

      CompatibleCisco

      Verified Purchase

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      0

    • Hilda Gibbon United States of America
      2026-03-20

      We've had this 100GBASE-SR4 module for a while now, mostly for short-range links, and it's been working well. It was ready to go as soon as I plugged it in—no extra steps needed. The traffic's been pretty steady, no drops or weird fluctuations. It's not something we have to stress about, which is actually a good sign.

      Transceivers typeQSFP-100G-SR4-S

      CompatibleCisco

      Verified Purchase

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      0

    • Blake Croft United States of America
      2026-03-06

      This 100GBASE-SR4 module is easy to use and starts working shortly after installation. It runs stably in daily operation without disconnections or speed issues. Monitoring parameters stay within normal ranges, requiring little attention. For standard 100G short-distance connections, it’s a reliable and practical choice.

      Transceivers typeQSFP-100G-SR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Zachary Bob United States of America
      2026-01-22

      This QSFP28 SR4 module provides an easy way to increase the bandwidth of short-reach links. It quickly becomes operational after installation and can handle sustained traffic without experiencing performance drops. Throughput remains consistent, and channel stability stays strong over time. It’s a practical choice for scaling 100G connections in data centers while keeping things simple.

      Transceivers typeQSFP-100G-SR4-S

      CompatibleCisco

      Verified Purchase

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      0

    • Atlas Jackson United States of America
      2025-12-29

      Used this QSFP-100G-SR4-S module to connect our switches over OM4 fiber (about 50m). It was a breeze to set up—plugged in and worked right away. Stable performance, no hiccups at full 100G speed. Great value compared to the brand-name one. Definitely does the job for a short-range link inside the data center.

      Transceivers typeQSFP-100G-SR4-S

      CompatibleCisco

      Verified Purchase

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      0

    • Mildred Felton United States of America
      2025-12-12

      The 100GBASE-SR4 module delivers strong and consistent performance in short-distance high-bandwidth environments. Latency stays low, and the optical channels maintain clean, reliable signals. Nice product!

      Transceivers typeQSFP-100G-SR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      1

    • Ada Philip United States of America
      2025-11-20

      This 100GBASE-SR4 module operates stably in high-bandwidth scenarios without packet loss or delayed data transmission. Its multi-core parallel transmission technology ensures reliable performance with low latency. The module features effective thermal management, guaranteeing long-term stable operation. For short-distance 100G interconnects within data centers, it provides a reliable and cost-effective solution.

      Transceivers typeQSFP-100G-SR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      1

    • Thiago United States of America
      2025-11-13

      Popped this QSFP-100G-SR4-S into our Catalyst C9500-24Y4C switches. Works like a charm for our server uplinks - recognized instantly and runs stable. Solid performance for the price, definitely trust this brand for our data center needs.

      Transceivers typeQSFP-100G-SR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      1

    • Owen Baker Canada
      2025-10-22

      Heard 'bout QSFPTEK from a buddy. Needed a cost-effective 100G SR4 module for our data centre to link up our Cisco switches. Grabbed this one, plugged it into the Cisco gear, and it's been running solid! Pretty stoked with the performance, a real no-brainer.

      Transceivers typeQSFP-100G-SR4-S

      CompatibleCisco

      Verified Purchase

      Helpful

      1

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    Resources

    • PDF Document
      QT-QSFP28-SR4 Datasheet.pdf
    • PDF Document
      Transceiver Module User Guide.pdf
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    Cisco QSFP-100G-SR4-S Compatible 100GBASE-SR4 QSFP28 850nm 100m MTP/MPO-12 MMF DDM Optical Transceiver Module

    Compatible Cisco

    Transceivers type QSFP-100G-SR4-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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    Cisco QSFP-100G-SR4-S Compatible 100GBASE-SR4 QSFP28 850nm 100m MTP/MPO-12 MMF DDM Optical Transceiver Module
    US$ 59.90
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    Cisco
    Transceivers type
    QSFP-100G-SR4-S
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    Bulk Order Quotes
    Cisco QSFP-100G-SR4-S Compatible 100GBASE-SR4 QSFP28 850nm 100m MTP/MPO-12 MMF DDM Optical Transceiver Module

    Compatible Cisco

    Transceivers type QSFP-100G-SR4-S

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