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    Home / Products / Transceivers / 25G/40G Transceivers / 40G QSFP+ / 100038

    Arista QSFP-40G-PLR4 Compatible 40GBASE-PSM4 QSFP+ 1310nm 10km MTP/MPO Optical Transceiver Module

    Product No: 100038
    17 Reviews
    582 Sold
    US$ 106.90  US$ 129.00
    Compatible
    Transceivers type
    1193 in real-time stock, 10 Jun, 2026

    Free Shipping over US$ 79.8

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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. Rate: 40G; Connector: MTP/MPO-12 Male; with DDM
2. DFB+PIN; Low Power Consumption <2.5W
3. Applied in Campus Network and Data Center
4. Fully Compatible with 100+ Vendors
5. QSFP+ MSA Compliant
    See more

    Specifications

    Arista QSFP-40G-PLR4 Compatible 40GBASE-PSM4 QSFP+ Optical Transceiver Module (SMF, 1310nm, 10km, MPO, DDM)

     

    The Arista QSFP-40G-PLR4 compatible 40G QSFP+ transceiver module is equipped with MTP/MPO connector, reaching a link up to 10km over single-mode fiber (SMF). This 40G optical transceiver comes with a bidirectional 4-channel QSFP+ connector, enabling a total of 40 Gbps bandwidth by each channel carrying a 10 Gbps data rate. DOM/DDM (digital diagnostics monitoring) function is supported on the QSFP 40G fiber optic transceiver to achieve real-time operating parameters monitoring.

     

    QSFPTEK manufactured 40GBASE-PSM4 QSFP+ module is compliant with QSFP+ MSA and IEEE 802.3ba 40GBASE-PSM4 specifications. Besides, the QSFP PSM4 optic has been tested on host devices to ensure full compatibility with Arista equipment, such as data center switches, enterprise routers, and server network interface cards (NICs). The third-party 40G SFP module is an ideal substitute for the Arista QSFP-40G-PLR4 QSFP+ 40G transceiver at an affordable price, providing a cost-effective compatible solution for high-performance 40G connectivity.

     

    PSM4 40G QSFP optics cater to 40 Gigabit Ethernet (40GbE) optical fiber connections, ideal for high-performance and long-distance applications in the data center, enterprise core and distribution layers, campus networks, metro networks, etc.

     

    Part Number QT-QSFP+-LR4-PSM4 Vendor Name QSFPTEK
    Form Factor QSFP+ Data Rate 40 Gbps
    Wavelength 1310nm Distance 10km
    Connector MTP/MPO-12 Male Cable Type SMF
    Transmitter Type 4x DFB Receiver Type PIN
    TX Power -6~-1dBm Receiver Sensitivity <-14.4dBm
    Power Consumption <2.5W Modulation Format NRZ
    DDM Support Bit Error Ratio (BER) 1E-12
    Protocols IEEE 802.3ba, QSFP+ MSA, SFF-8436, Infiniband 40G QDR 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 Arista devices. Ideal for data center, campus network, metro network, etc.
    • 3. Protocols
      Compliant with IEEE 802.3ba, QSFP+ MSA, SFF-8436, SFF-8636.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

    Data Center 40 Gigabit Ethernet Direct Connection Solution:

    Data Center 40G PSM4 Gigabit Ethernet Direct Connection Solution

      

     

    40GBASE-PSM4 to 4x 10G Breakout Connection Solution:

    40GBASE-PSM4 to 4x 10G Breakout Connection Solution

      

    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

     

     

    Various Switch Tests

     

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

     

    QSFPTEK Test Devices

     

     

    40G QSFP+ Model Contrast Table

     

    Part Number

    QT-QSFP+-SR4

    QT-QSFP+-IR4

    QT-QSFP+-PSM4

    QT-QSFP+-LR4

    QT-QSFP+-LR4-20

    QT-QSFP+-ER4

    QT-QSFP+-ZR4

    Image

    Wavelength

    850nm

    CWDM

    1310nm

    CWDM

    CWDM

    CWDM

    LWDM 1294~1310nm

    Max Distance

    150m

    2km

    10km

    10km

    20km

    40km

    80km

    Cable Type

    OM3/OM4 MMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    Connector

    MPO/MTP-12

    LC Duplex

    MPO/MTP-12

    LC Duplex

    LC Duplex

    LC Duplex

    LC Duplex

    Tx Power(dBm)

    -7 ~ 1

    -7 ~ 2.3

    -6 ~ -1

    -7 ~ 2.3

    -4 ~ 2.3

    -2.7 ~ 4.5

    -2.7 ~ 4.5

    Rx Sensitivity(dBm)

    -9.5

    -11.5

    -14.4

    -13.7

    -11.5

    -19

    -28

    Power Consumption

    <0.7W

    <2.5W

    <2.5W

    < 2.5W

    <3.5W

    <3.5W

    <5W

    Source

    VCSEL + PIN

    DFB + PIN

    4xDFB + PIN

    DFB + PIN

    DFB + PIN

    DFB + PIN

    4xDFB + APD

    Operating Temperature

    0 to 70°C

    0 to 70°C

    0 to 70°C

    0 to 70°C

    0 to 70°C

    0 to 70°C

    0 to 70°C

    Questions & Answers

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    Customer Reviews

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    5 stars

    16 Reviews

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    • ALL (5)
    • Premium Service (1)
    • Good Price (2)
    • Plug-and-Play (1)
    • Compatibility (1)
    • Fast Delivery (2)
    • Kevin United States of America
      2025-12-12

      The 40GBASE-PSM4 module performed reasonably well overall, basically meeting our requirements for a 10km link. It was plug-and-play without any issues, and compatibility was also good. However, there were occasional slight delays under high load scenarios, but it's perfectly sufficient for general applications.

      Transceivers typeQSFP-40G-PLR4

      CompatibleArista

      Verified Purchase

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      0

    • Jerry United States of America
      2025-10-17

      I'm very satisfied! My project was extremely urgent, and I needed a large quantity of 4 x 10GBASE-LR QSFP+ breakout modules. At first, I was worried there wouldn't be enough stock, but I was surprised to see plenty available on the QSFPTEK website. Even more impressive, the order arrived in just three days—excellent service and fast delivery!

      Transceivers typeQSFP-40G-PLR4

      CompatibleArista

      Verified Purchase

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    • Gaylord United Kingdom
      2025-09-30

      The modules deliver stable 40G connectivity over single-mode fiber up to 10km, which perfectly meets our backbone and inter-rack communication needs. The MPO interface made installation quick and efficient, and compatibility with our existing switches.

      Transceivers typeQSFP-40G-PLR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Akira United Kingdom
      2025-09-05

      Since the original transceivers are expensive and we have numerous data center projects to handle as a professional company, we wanted to try third-party transceivers to save on costs. There don't seem to be any transmission issues at the moment.

      Transceivers typeQSFP-40G-PLR4

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Andrew United States of America
      2025-07-25

      Good price. As long as it arrives on time and matches the description, I’ll be happy. Would buy from QSFPTEK again.

      Transceivers typeQSFP-40G-PLR4

      CompatibleArista

      Verified Purchase

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      0

    Resources

    • PDF Document
      QT-QSFP+-LR4-PSM4 Datasheet.pdf
    • PDF Document
      Transceiver Module User Guide.pdf
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    Arista QSFP-40G-PLR4 Compatible 40GBASE-PSM4 QSFP+ 1310nm 10km MTP/MPO Optical Transceiver Module

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    Transceivers type QSFP-40G-PLR4

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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!

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    Arista QSFP-40G-PLR4 Compatible 40GBASE-PSM4 QSFP+ 1310nm 10km MTP/MPO Optical Transceiver Module
    US$ 129.00
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    QSFP-40G-PLR4
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    Bulk Order Quotes
    Arista QSFP-40G-PLR4 Compatible 40GBASE-PSM4 QSFP+ 1310nm 10km MTP/MPO Optical Transceiver Module

    Compatible Arista

    Transceivers type QSFP-40G-PLR4

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