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Refurb Squared Cisco QSFP-100G-CWDM4-S Compatible 100GBASE-CWDM4 QSFP28 4 x 25G NRZ 1310nm 2km DOM Duplex LC/UPC SMF Optical Transceiver Module

Refurb Squared Cisco QSFP-100G-CWDM4-S Compatible 100GBASE-CWDM4 QSFP28 4 x 25G NRZ 1310nm 2km DOM Duplex LC/UPC SMF Optical Transceiver Module

Transceiver Models
Compatible Brands

Product SKU

RS-QSFP-100G-CWDM4-S2km-143286

Description

Refurb Squared delivers fully tested, OEM-compatible optical transceivers, DWDM/CWDM systems, media converters and DAC/AOC cables coded for Cisco, Huawei, Juniper, Arista, HPE, Dell, Nokia and Fortinet platforms, with lifetime warranty and fast global delivery.

The Cisco QSFP-100G-CWDM4-S Compatible QSFP28 transceiver supports 100GBASE Ethernet up to 2km over single-mode fiber with duplex LC connectors. It operates on four CWDM wavelengths (1271, 1291, 1311, and 1331 nm) and complies with IEEE 802.3ba/802.3bm, 100G CWDM4 MSA, SFF-8665, SFF-8636, and ITU-T G.694.2 standards. Digital diagnostics are accessible via the I2C interface. With its hot-swappable design and reliable performance, it is ideal for data centers, high-performance computing, and enterprise core and distribution networks. Note: The two pull-tab transceivers are shipped randomly due to different batches. And the quality is the same.

Refurb Squared is brand of OEM-compatible optical networking products, including SFP, SFP+, QSFP+, QSFP28 and QSFP-DD transceivers, DWDM/CWDM systems, media converters, and DAC/AOC cables. Every module is 100% pre-shipment tested and coded for seamless compatibility with major platforms such as Cisco, Huawei, Juniper, Arista, HPE, Dell, Nokia and Fortinet backed by a lifetime warranty, fast global delivery, and dedicated technical support for data centers, telecom operators, enterprise networks and system integrators worldwide.

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AUTHENTICITY & TESTING

Professionally verified before dispatch.

Every product is prepared for business use with checks for quality, functionality, and physical condition. Refurb Squared focuses on reliable, compatible equipment for enterprise environments.

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Quality checked

Inspected for condition, function, and readiness before fulfilment.

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Business-grade

Selected for dependable use across servers, networks, storage, and IT infrastructure.

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Circular IT

Extends hardware lifecycle and supports more sustainable IT procurement.

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Trusted sourcing

Supplied through a professional refurbished equipment process.

COMPATIBILITY CONFIDENCE

Built to fit your infrastructure.

Not sure if this product is right for your environment? Send us your model, part number, or project requirement and we will help confirm compatibility before purchase.

  • 1Share your server, switch, router, storage, or system model.
  • 2Confirm the required speed, connector, form factor, or configuration.
  • 3Get guidance before placing an order or requesting a quote.
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Lifetime warranty options

Selected products are supported with lifetime warranty coverage for long-term peace of mind.

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Expert support

Our team can help with configuration, compatibility questions, and sourcing alternatives.

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Fast quote assistance

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