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by Cisco
Product Line: Cisco Series
Product Type: QSFP Module
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Original price $0.00 - Original price $0.00
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Product Description

The WSP-Q40GLR4L is a 40 Gigabit Ethernet transceiver operating at a wavelength of 1310 nm and designed for SMF with a duplex LC connector. It supports a link length of up to 2km with an optical link budget of 4 decibels, ensuring reliable data transmission with a link BER of 1E-12. This module operates within a temperature range of 10 °C to 60 °C, has a power consumption of 3.5 W, and utilizes a core size of G.652 microns.

FAQs for the WSP-Q40GLR4L

  • What is the maximum link length supported by this device?
    The device supports a maximum link length of up to 2km.
  • What type of cable should be used with part number?
    SMF (Single Mode Fiber) should be used with the device.
  • Can this device operate at 40 Gigabit Ethernet speeds?
    Yes, it is designed for 40 Gigabit Ethernet signal transmission.
  • What is the operating temperature range for part number?
    The operating temperature range is from 10 °C to 60 °C.
  • What connector type does this networking hardware utilize?
    It utilizes a Duplex LC connector type.
  • What is the power consumption of part number?
    The power consumption is 3.5 W.
  • What is the minimum Bit Error Rate (BER) supported?
    The minimum supported Bit Error Rate (BER) is 1E-12.
  • What are the storage temperature limits for part number?
    The storage temperature limits are from -40 °C to 85 °C.
  • What laser class is the device categorized under?
    The device falls under Laser Class 1.
  • What color is the pull tab for part number?
    The pull tab color is yellow.

Product Review

The Cisco WSP-Q40GLR4L offers a 40 Gigabit Ethernet connection over a single-mode fiber (SMF) with a link length of up to 2km, catering to high-speed networking needs. Despite its high performance, the module has a relatively limited optical link budget of 4 decibels, which could restrict its use in environments with higher attenuation. Furthermore, its power consumption is 3.5W, which is efficient for its class, although operational temperature ranges from 10°C to 60°C may not suit all data center environments.


The Cisco WSP-Q40GLR4L is designed for high-speed networking, offering 40 Gigabit Ethernet connectivity over single-mode fiber (SMF). This transceiver module uses a wavelength of 1310 nm for data transmission and comes equipped with a duplex LC connector, ensuring compatibility with a wide range of networking equipment. It is specifically engineered to support link lengths of up to 2 kilometers, catering to the needs of campus, data center, and metropolitan area access networks. This module's optical link budget is 4 decibels, which indicates its efficiency in maintaining signal strength over the specified distance. The core size of the fiber optic cable used with this transceiver is G.652 microns, a standard that is widely adopted for single-mode fiber, ensuring optimal performance and compatibility. From a durability and operational standpoint, the Cisco WSP-Q40GLR4L is built to function within a broad temperature range. It has a minimum operating temperature of 10 °C and can withstand up to 60 °C, making it suitable for environments that experience significant temperature variations. Furthermore, for storage, it is designed to tolerate temperatures as low as -40 °C and as high as 85 °C, ensuring that the device remains unaffected by extreme conditions when not in use. Power efficiency is another key aspect of this module, with a power consumption rate of only 3.5 W. This low power draw contributes to reduced operational costs and a smaller carbon footprint, making it an environmentally friendly choice for businesses. Safety is paramount in networking hardware, and the Cisco WSP-Q40GLR4L adheres to this principle by being classified as a Class 1 laser product. This classification ensures that the device does not pose any significant risk of injury to users under normal operating conditions. The module's pull tab is colored yellow, a design choice that aids in easy identification and handling during installation or maintenance. Such thoughtful design elements contribute to the user-friendly nature of the device. Key technical specifications include: - Wavelength: 1310 nm, ensuring efficient data transmission over SMF. - Connector Type: Duplex LC, offering reliable connectivity and compatibility with a broad range of networking equipment. - Link Length: Supports distances up to 2 km, suitable for a variety of network setups. In terms of data integrity, the Cisco WSP-Q40GLR4L boasts a link Bit Error Rate (BER) of 1E-12, affirming its ability to deliver data accurately and reliably across the network. This low BER is critical for applications that demand high levels of data precision and reliability. In conclusion, the Cisco WSP-Q40GLR4L transceiver module stands out for its combination of high-speed data transmission capabilities, broad operational temperature range, energy efficiency, and safety. It is designed to meet the demands of modern networks, offering reliable, long-distance connectivity for a variety of applications. Whether for data centers, campus networks, or metropolitan area networks, this module provides a dependable solution for extending network reach without compromising on performance or safety.


Part Number Cisco WSP-Q40GLR4L
Manufacturer Cisco
Emission Wavelength 1310 nm
Fiber Type Single-Mode Fiber (SMF)
Connector Design LC Duplex
Maximum Transmission Distance 2 kilometers
Data Rate 40 Gbps Ethernet
Optical Budget 4 dB
Lowest Operating Temp 10 Degrees Celsius
Highest Operating Temp 60 Degrees Celsius
Fiber Core Diameter G.652
Energy Usage 3.5 Watts
Extraction Handle Hue Yellow
Bit Error Rate 1E-12
Storage Temp Min -40 Degrees Celsius
Storage Temp Max 85 Degrees Celsius
Laser Safety Category Class 1

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