Cisco WSP-Q40GLR4L Single-Mode Transceiver
If you need a large quantity of WSP-Q40GLR4L product - call us at +1 (718) 766 5269 or request a quote at live chat and our sales manager will contact you shortly.
Looking for assistance? Connect with one of our experts
FREE Shipping. We are accepting NET 30 Days Purchase Orders. Get a decision in seconds, without affecting your credit.

Cisco WSP-Q40GLR4L 40GBPS Single-Mode QSFP+ Transceiver New

Availability: In Stock
Part Number#: WSP-Q40GLR4L
List Price was: $1000.00
Your Price:
You Save: $740.00 (74% off)

3% Discount on Checkout

Short Description:
WSP-Q40GLR4L 40Gigabytes Per Second (GBPS) Single-mode Quad Small Form-Factor Pluggable Plus (QSFP+) Transceiver Module | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

More Specification 40GBPS Transceiver

The Cisco WSP-Q40GLR4L is a 40 Gigabit per second (40 Gbps) single-mode QSFP+ transceiver module. It is designed to be used in Cisco data center and enterprise network environments.

This transceiver module supports a data rate of 40 Gbps and has a maximum reach of 40 kilometers (km) on single-mode fiber (SMF) cables. It is compatible with Cisco Nexus, ASR, and Catalyst switches, as well as other Cisco routers and switches that support QSFP+ transceivers.

The Cisco module is compliant with the QSFP+ Multi-Source Agreement (MSA) and is RoHS compliant. It uses four parallel optical channels to transmit and receive data and has a wavelength of 1550 nanometers (nm).

This transceiver module also features a digital diagnostic monitoring (DDM) interface, which allows for real-time monitoring of module parameters such as temperature, voltage, and laser bias current. This allows for easy troubleshooting and monitoring of the module's performance.

The part of module is also designed to be hot-swappable, meaning it can be replaced without having to power down the device it is connected to. This allows for minimal disruption to network operations when upgrading or replacing the module.

Compliant Standards of 1 Port Transceiver Module

The Cisco WSP-Q40GLR4L 40GBPS Single-Mode QSFP+ Transceiver Module is a compliant device that meets industry standards for data transmission and connectivity. This module is designed to support 40GBPS data transfer speeds over single-mode fiber optic cables, using a QSFP+ (Quad Small Form-factor Pluggable) interface.

The module is compliant with the IEEE 802.3ba 40GBASE-LR4 standard, which specifies the requirements for 40GBPS data transmission over single-mode fiber optic cables with a reach of up to 10 kilometers. It also meets the RoHS (Restriction of Hazardous Substances) and MSA (Multi-Source Agreement) standards, ensuring that it is free from hazardous materials and is fully compatible with other QSFP+ transceiver modules.

The Cisco product also supports digital optical monitoring (DOM) functionality, which allows for real-time monitoring of the module's optical performance, such as received optical power, transmitted optical power, and temperature. This feature helps to ensure that the module is operating within optimal parameters and allows for early detection of any potential issues.

Quality Components

The Cisco WSP-Q40GLR4L 40GBPS Single-Mode QSFP+ Transceiver Module is a high-quality, reliable transceiver module that is designed to provide fast and efficient data transfer over long distances. The module includes several key components that contribute to its superior performance, including:

  • High-Speed Data Transfer: The module supports a data transfer rate of 40 Gbps, which is ideal for high-bandwidth applications such as data centers, cloud computing, and enterprise networks.
  • Single-Mode Fiber Optics: The module uses single-mode fiber optics, which allows for longer transmission distances than multi-mode fiber optics. This makes it ideal for use in large-scale networks and data centers.
  • Quality of Service (QoS) Features: The module includes Quality of Service (QoS) features that help ensure that data is transmitted reliably and efficiently. These features include flow control, congestion management, and packet prioritization.
  • Low Power Consumption: The module is designed to be energy-efficient, with low power consumption that helps to reduce operating costs.
  • Compatibility: The module is compatible with a wide range of Cisco devices, including switches, routers, and other networking equipment.
  • Durability: The module is built to withstand harsh environments and is designed to be reliable and robust, providing long service life.
  • Compliance: The module is compliant with industry standards such as IEEE and RoHS.
  • Safety: The module is designed to be safe for use, with over-temperature protection and over-current protection.

General Information about this Cisco WSP-Q40GLR4L

  • Manufacturer: Cisco
  • Model Number or SKU# WSP-Q40GLR4L
  • Cable Type: SMF
  • Interface Type: LR4L
  • Product Type: Transceiver

Technical Information of QSFP Transceiver

  • Application/Usage: Data Networking
  • Application/Usage: Optical Network
  • Form Factor: QSFP+ Hot-swappable
  • Rate Category: 40GBPS

Interfaces/Ports for Single-mode Transceiver

  • Total Number of Ports: 1
  • Connector Type: LC
  • Details: 1 x LC Duplex 40GBase-LR4 Network

Media & Performance for this Fiber Transceiver

  • Fiber Mode Supported: Single-mode

Dimension and Weight

  • Height: 0.5 inch
  • Width: 0.7 inch
  • Depth: 2.9 inch


  • Compatibility: MSA Compliant
  • Environmentally Friendly: Yes
  • Environmental Certification: RoHS-6

Building a fibre-optic network calls for a lot of planning and consideration of many factors. Transceivers are part of the many devices used to build optical fibre systems. A transceiver serves the combined roles of a transmitter and a receiver in that it transmits and receives signals. They are most common in communication equipment such as cellular phones, cordless telephone sets, and radios. Small form factors are required as networks become dense and space is limited, which sees transceivers included in chipsets.

In local area networks (LAN), a transceiver is used to connect a computer to printers and other devices on the network. Usually, the transceiver is integrated into the Network Interface Card (NIC)

Typical Roles of a Transceiver

  • Used to convert frequencies from IF to RF.
  • Widespread use in wireless communication to transmit data – voice, data, and video.
  • RF transceivers are used in communication devices to support radio and TV signal transmission, digital signals transmission, and satellite communication.
  • Collision detection – detection of simultaneous signals on the network.
  • Transceivers can be deployed to provide a jabber function to interrupt the transmission of long data stream outputs.

Look no further for all types of transceivers including fibre optic transceivers, wireless transceivers, Ethernet transceivers, and RF transceivers. All these transceivers have different characteristics and support full-duplex communication, but the principle behind their work remains the same. Different types of transceivers will have varying numbers of ports used in the transceiver networking connections.

RF Transceivers: these devices are used to transmit video or voice data over a wireless medium. Commonly used for satellite communication, radio transmission, and ITE/WiMax/WLAN networks. The radio transceiver works by silencing the receiver when it is transmitting. There is an electronic switch that facilitates the connection of both the receiver and transmitter on the same antenna. The switch protects the receiver from damage that may be caused by the transmitter output.

Fiber Optic Transceivers: Also referred to as optical modules or fibre optical transceivers. Used to transmit data in fibre optic technology. The network must also have electronic components to encode or decode data into light signals.

Ethernet Transceivers: Basically used to connect electronic devices in a network so that they are able to transmit and receive data. It is also referred to as a media access unit (MAU). The best application of these transceivers is in the specification of IEEE 802.3 and Ethernet. Ethernet transceivers will detect a collision, provide Ethernet interface processing, convert digital data, and provide access to the network.

Wireless Transceivers: Wireless transceivers are a fundamental component necessary for data delivery in wireless networks. These transceivers have two layers. The physical layer has a baseband processor and RF front end. The processor converts a bitstream to a collection symbol flow for data transmission. The second layer is a MAC layer for link traffic control in contacting wireless links, improving data throughput, and preventing collisions.

We guarantee our customers high quality and reliability for all our transceiver networking solutions, irrespective of the type and size of your network.

Here, you can check more available conditions of your desired product WSP-Q40GLR4L at a competitive price. We are trying our best to meet your needs on the enterprise-level computer, server, data centre, and networking hardware. You are welcome to ask our live chat or get live representative support over the phone.


Please choose your location for calculate shipping cost.


ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

Free Technical support on purchased items, our expert consultancy over the phone, by email, by live chat, or by remote login.


Shipping Options and Estimated Delivery Time

UPS Shipping Options:

FREE UPS® Ground (Free shipping to all orders for 48 states!)
Estimated delivery time: 4-7 business days

UPS 3 Day Select®
Estimated delivery time: 3 business days

UPS 2nd Day Air®
Estimated delivery time: 1-2 business days, Delivery by 10:30 AM or 2:00 PM

UPS Next Day Air® Standard Overnight
Estimated delivery time: Overnight 2-5 PM, Standard Overnight Delivery.

UPS Next Day Air® - Priority Overnight
Estimated delivery time: Overnight Delivery (Next Business Day) Delivery by 10:30 AM or 12:00 PM

UPS Next Day Air® First Overnight - Early A.M
Estimated delivery time: Overnight 8:00 AM, Early morning, overnight delivery for your time-critical shipments.

UPS® First Overnight - Saturday
Estimated delivery time: Overnight 8:30 AM – Saturday

FedEx Shipping Options:

FedEx Ground®
Estimated delivery time: (4–7 business days in the contiguous 48 states)
*For residential delivery via FedEx Ground use FedEx Home Delivery®
Estimated delivery time: 4−7 business days, based on the distance to the destination.

FedEx Express Saver®
Estimated delivery time: 3 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states (except Hawaii and Alaska)

FedEx 2Day®
Estimated delivery time: 2 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states

FedEx Standard Overnight®
Estimated delivery time: Next-business-day (by 4:30 PM to U.S. businesses and by 8:00 PM to residences)
Available throughout all 50 states (Hawaii is outbound only)

FedEx Priority Overnight®
Estimated delivery time: Next-business-day (by 10:30 PM to U.S. businesses, noon to most residences)
Available throughout all 50 states

FedEx First Overnight®
Estimated delivery time: Next-business-day (by 8:30 or 9 AM to most areas)
Available throughout all 50 states

Worldwide Shipping Options:

UPS®/FedEx® International Economy

Estimated delivery time: 4-7 business days

UPS®/FedEx® International Priority

Estimated delivery time: 2-4 business days

UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

  • The processing of orders with Ground Shipping can take up to 24-48 hours. But we try to process all orders the same day.
  • We are not responsible for weather problems that may affect the delivery of goods by carriers. We cannot guarantee the exact delivery time, regardless of the carriers' claims.
  • If you have any specific delivery time requirements, please contact our customer support and someone from our customer service team will be able to help you.
  • You can estimate the shipping cost from the products detail page, also available on the checkout page
  • The shipping cost depends on box dimensions, weight, and zip/postal code
  • To get a FedEx® delivery service you need to mention it on the checkout page notebox.
  • For urgent shipments, please contact our customer service.
  • Shipping cut off 4:00 PM (Monday-Friday) and available blind drop shipment.