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    Cisco QSFP-40G-CSR4 Compatible QSFP+ Module - 40GBase-SR4 Fiber Optical Transceiver (QSFP-40G-CSR4-ST)

    • 100% Compatibility with Cisco QSFP-40G-CSR4 guaranteed
    • StarTech.com QSFP+ modules are backed by a lifetime warranty
    • Meets or exceeds OEM specifications and Multi-Source Agreement (MSA) industry standards
    • Low power consumption
    • Hot-swappable with fiber-optic modules
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    Learn more about the STARTECH QSFP-40G-CSR4-ST

    Model
    Brand StarTech.com
    Model QSFP-40G-CSR4-ST
    Details
    Device Type QSFP+ Transceiver Module
    Wavelength 850nm
    Fiber Cable Multi-mode Optical Fiber
    Ports 40GBase-SR4
    Max Distance 400 m (1312 ft.)
    Transfer Rate 40 Gbps
    Features
    Feature Compatible Brand: Cisco
    Wavelength: 850nm
    Maximum Data Transfer Rate: 40 Gbps
    Type: Multi Mode
    Connection Type: MPO
    Maximum Transfer Distance: 400 m (1312 ft.)
    MTBF: 95,832,027 hours
    Power Consumption: Low power consumption
    Digital Diagnostics Monitoring (DDM): Yes

    The QSFP-40G-CSR4-ST is a Cisco QSFP-40G-CSR4 compatible fiber transceiver module that has been designed, programmed and tested to work with Arista Networks brand switches and routers. It delivers dependable 40 GbE connectivity over fiber cable, for 40GBase-SR4 compliant networks, with a maximum distance of up to 400 m (1312 ft.).

    This QSFP+ fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions.
    Dimensions & Weight
    Dimensions 0.33" x 0.73" x 4.80"
    Weight 0.08 lbs.
    Package Contents
    Package Contents 1 x QSFP+ Transceiver
    Additional Information
    First Listed on Newegg January 19, 2026

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