Cisco QSFP-100G-CWDM4-S 100 Gigabit Transceiver
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Cisco QSFP-100G-CWDM4-S 100Gbps QSFP Transceiver Module New

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Part Number#: QSFP-100G-CWDM4-S
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Short Description:
QSFP-100G-CWDM4-S 100 Gigabytes Per Second (GBPS) 100GBase-CWDM4 Single-mode Fiber 2km 1310nm LC Connector Quad Small Form-Factor Pluggable (QSFP) Transceiver Module | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

Product Overview for the Cisco QSFP-100G-CWDM4-S 100 Gigabit Transceiver

In the fast-paced world of networking, the demand for high-speed data transmission has never been higher. Cisco, a renowned name in the networking industry, has introduced the QSFP-100G-CWDM4-S LC Single-Mode QSFP+ 100 Gbps Transceiver Module, a cutting-edge solution designed to meet the evolving needs of modern networks. In this comprehensive guide, we will delve into the intricacies of this powerful transceiver module, exploring its features, benefits, and applications.

Understanding the Basics

Before diving into the specifics, let's establish a foundational understanding of the Cisco QSFP-100G-CWDM4-S. QSFP stands for Quad Small Form-factor Pluggable, indicating its compact size and versatility. The "100G" denotes its capability to transmit data at a staggering 100 gigabits per second, making it ideal for high-performance networking applications.

  • LC Single-Mode Fiber Connectivity: The "LC Single-Mode" aspect of the module refers to its connectivity through LC connectors and the use of single-mode fiber. LC connectors are known for their small form factor and reliable performance. Single-mode fiber, on the other hand, allows for the transmission of data over longer distances with minimal signal loss, making it suitable for large-scale networks and data centers.
  • CWDM4 Technology: One of the standout features of the Cisco QSFP-100G-CWDM4-S is its implementation of Coarse Wavelength Division Multiplexing (CWDM4) technology. CWDM4 enables the simultaneous transmission of multiple data streams over a single fiber optic cable, each at a different wavelength. This effectively increases the module's capacity to handle more data, contributing to its impressive 100 Gbps transmission speed.

Key Features

  • High Transmission Speeds: The primary selling point of the Cisco QSFP-100G-CWDM4-S is its ability to transmit data at 100 gigabits per second. This high-speed capability makes it well-suited for bandwidth-intensive applications and ensures optimal performance in data center environments.
  • CWDM4 Wavelengths: Leveraging CWDM4 technology, this transceiver module operates on four distinct wavelengths, allowing for efficient data multiplexing. The specific wavelengths utilized are within the Coarse Wavelength Division Multiplexing spectrum, optimizing the use of available bandwidth.
  • Compact Form Factor: The QSFP form factor ensures a compact design, making it easy to install and manage in space-constrained networking environments. Its small size is particularly advantageous in densely populated data centers where maximizing rack space is crucial.
  • LC Connector Compatibility: The LC connectors provide a reliable and efficient means of connecting the transceiver module to the network. Known for their low insertion loss and compact design, LC connectors contribute to the overall performance and reliability of the module.
  • Single-Mode Fiber Capability: The compatibility with single-mode fiber allows for long-distance data transmission with minimal signal degradation. This makes the QSFP-100G-CWDM4-S an excellent choice for networks that require connectivity over extended distances.


The Cisco QSFP-100G-CWDM4-S is a versatile transceiver module with a wide range of applications. Some key use cases include:

  • Data Centers: In the modern data center landscape, where large volumes of data are processed and transferred, the high-speed capabilities of this transceiver module are invaluable. Its compact form factor and compatibility with LC connectors make it an ideal choice for data center environments.
  • Telecommunications: Telecommunication networks demand reliable and high-speed data transmission. The Cisco QSFP-100G-CWDM4-S meets these requirements, offering a solution for telecommunications providers looking to enhance the performance of their networks.
  • High-Performance Computing (HPC): High-performance computing environments, including scientific research and simulations, require fast and efficient data transfer. The 100 Gbps transmission speed of this module ensures that HPC clusters can communicate seamlessly, facilitating complex computations.
  • Cloud Computing: Cloud service providers benefit from the Cisco QSFP-100G-CWDM4-S by ensuring that data flows smoothly between servers and data storage. Its high-speed transmission capabilities contribute to the overall efficiency and responsiveness of cloud-based applications.

Benefits of Choosing Cisco QSFP-100G-CWDM4-S

  • Scalability: The module's 100 Gbps transmission speed and CWDM4 technology provide a scalable solution for growing network demands. As data requirements increase, the Cisco QSFP-100G-CWDM4-S can seamlessly integrate into existing infrastructure, accommodating higher data volumes.
  • Reliability: Cisco, as a trusted name in the networking industry, is synonymous with reliability. The QSFP-100G-CWDM4-S is built to meet rigorous standards, ensuring consistent and dependable performance in a variety of networking environments.
  • Cost-Effectiveness: The compact form factor and high-speed capabilities of this module contribute to its cost-effectiveness. By maximizing data transmission efficiency and minimizing the physical space required, organizations can achieve better performance without a significant increase in costs.
  • Long-Distance Connectivity: The compatibility with single-mode fiber enables long-distance connectivity without sacrificing data integrity. This makes the Cisco QSFP-100G-CWDM4-S suitable for applications where data needs to be transmitted over extended distances, such as metropolitan and wide-area networks.

Network Connectivity

The QSFP-100G-CWDM4-S (Cisco 100GBASE CWDM4 QSFP Transceiver) is a high-speed optical transceiver module used for data transmission in data centers and high-performance computing networks. It operates at 100 Gbps speeds over 4 channels of CWDM (Coarse Wavelength Division Multiplexing) optical wavelength, which is transmitted over single-mode fiber (SMF).

This transceiver is compatible with the QSFP form factor and can be plugged into a QSFP port on a network switch or router, providing 100 Gbps connectivity over a single fiber pair. The QSFP-100G-CWDM4-S supports distances up to 2 km over single-mode fiber.

Compatibility and Interoperability

Compatibility refers to the ability of different components or devices to work together without causing any issues. In the case of the Cisco 100GBASE CWDM4 QSFP transceiver (QSFP-100G-CWDM4-S), compatibility refers to the compatibility of this transceiver with other networking devices and components that it may be used with.

Interoperability refers to the ability of different components or devices to work together seamlessly and effectively, even if they are from different vendors. In the case of the QSFP-100G-CWDM4-S, interoperability refers to its ability to work with other 100G transceivers, switches, and routers, even if they are not made by Cisco.

Both compatibility and interoperability are important factors to consider when selecting and deploying networking components, as they ensure that the components will work together as intended, provide optimal performance, and minimize the risk of downtime.

In the case of the QSFP-100G-CWDM4-S, it is important to verify that it is compatible and interoperable with the devices it will be used with before deployment, as compatibility and interoperability can be affected by factors such as firmware and hardware revisions, operating system versions, and configurations.

General Information about this Cisco QSFP-100G-CWDM4-S

  • Manufacturer: Cisco
  • Part Number or SKU# QSFP-100G-CWDM4-S
  • Product Type: Transceiver Module
  • Product Name: LC Single-Mode QSFP+ Transceiver Module

Technical Specifications for Networking Equipment

Application and Usage

  • Data Networking: This equipment is designed for efficient data networking applications.
  • Optical Network: Specifically tailored for optical network usage.


  • Ports: 1 x LC Duplex
  • Network Speed: 100GBase-CWDM4


  • Media Type: Optical Fiber
  • Fiber Mode: Single-mode
  • Ethernet Technology: 100 Gigabit Ethernet
  • Network Technology: 100GBase-CWDM4


  • Environmentally Friendly: Yes
  • Environmental Certification: RoHS-6

In general, the Cisco QSFP-100G-CWDM4-S LC Single-Mode QSFP+ 100 Gbps Transceiver Module stands as a powerful solution in the realm of high-speed data transmission. With its compact form factor, compatibility with LC connectors and utilization of CWDM4 technology, this module addresses the evolving needs of modern networks, including data centers, telecommunications, high-performance computing, and cloud computing. Choosing Cisco ensures not only cutting-edge technology but also the reliability and expertise that come with a leading name in the networking industry. As the demand for faster and more efficient data transmission continues to rise, the Cisco QSFP-100G-CWDM4-S proves to be a strategic investment for organizations seeking optimal network performance.

Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

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