NSComm NS-QSFP-40G-LR4 40G Base-LR4 QSFP+ 1310nm (CWDM) 10km Duplex LC SMF DDM Optical Transceiver Module
NSComm NS-QSFP-40G-LR4 40G Base-LR4 QSFP+ 1310nm (CWDM) 10km Duplex LC SMF DDM Optical Transceiver Module
NSComm NS-QSFP-40G-LR4 40G Base-LR4 QSFP+ 1310nm (CWDM) 10km Duplex LC SMF DDM Optical Transceiver Module
NSComm NS-QSFP-40G-LR4 40G Base-LR4 QSFP+ 1310nm (CWDM) 10km Duplex LC SMF DDM Optical Transceiver Module
NSComm NS-QSFP-40G-LR4 40G Base-LR4 QSFP+ 1310nm (CWDM) 10km Duplex LC SMF DDM Optical Transceiver Module
Name:

NSComm NS-QSFP-40G-LR4 40G Base-LR4 QSFP+ 1310nm (CWDM) 10km Duplex LC SMF DDM Optical Transceiver Module

Model:
NS-QSFP-40G-LR4
Detail:
QSFP‑40G‑LR4 Transceiver Module, 40 Gbps, 1310 nm, Duplex LC, 10 km
Price:
$282.45 USD
Availability:
In Stock Pre order Out of stock
Condition:
New
Warranty:
Variants

Compatible: Generic

Generic
Cisco
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Juniper
Arista Network
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HPE Aruba
H3C
Dell
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Overview
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Features

10Gbps for Campus and Data Center

Engineered for low power consumption, our transceiver modules deliver a reliable and budget-friendly solution for 1Gbps Gigabit Ethernet connectivity in data centers.

Comprehensive Testing Ensures Reliability

Our transceiver modules undergo rigorous testing with advanced equipment, guaranteeing high-quality performance and reliable 10Gbps to 40Gbps optical connectivity.

View compatible list.

NS-QSFP‑40G‑LR4 Transceiver Module | 40 Gbps, 1310 nm, Duplex LC, 10 km – Compatible with All Brands

Product Overview

The NSComm NS-QSFP‑40G‑LR4 is a high-performance QSFP+ transceiver designed to support 40 Gigabit Ethernet over long distances via single-mode fiber. 

It operates using four wavelength channels in the 1270 – 1330 nm CWDM bands, delivering up to 40 Gbps throughput combined, with a maximum reach of 10 km over SMF using duplex LC connectors.

It’s hot-swappable, standards-compliant with IEEE 802.3ba and QSFP+ MSA, and features Digital Optical Diagnostics Monitoring (DDM) for real-time performance tracking.

This module is built for universal cross-brand compatibility, working flawlessly with equipment from Cisco, Juniper, Arista, Dell, Palo Alto Networks, HPE Aruba, Huawei, and many others.

Compatible Brands

The NS-QSFP-40G-LR4 is universally compatible across all brands. If you need to verify compatibility with your specific switch model, please click Contact Us Now for assistance.

Key Specifications

Specification Details
Vendor Name NSComm
Form Factor QSFP+
Max. Data Rate Up to 40 Gbps (4×10 Gbps channels)
Wavelengths 1270–1330 nm (CWDM4)
Max. Cable Distance 10 km over Single-Mode Fiber (SMF)
Connector Duplex LC
Media Type SMF (Single-Mode Fiber)
Digital Diagnostics (DDM) Supported
Transmit Power (TX) Compliant to LR4 spec
Receiver Sensitivity Compliant to LR4 spec
Operating Temperature 0 °C to 70 °C (Commercial)
Protocol Support IEEE 802.3ba, QSFP+ MSA, CWDM ITU‑T G.694.2

 

More Details

Quality Certifications

Do you have any question about the NSComm NS-QSFP-40G-LR4 Optical Transceiver?

Please Chat with us now!

or leave us an message on sales@network-switch.com

Warranty

100% Low Price Guarantee

Network-switch.com provides high-quality products at low wholesale prices

100% Quality Assurance

All items are ORIGINAL and GENUINE only.
Item conditions are "New Sealed". They are fully tested by Certified CCIE / HCIE / RCNP Engineers.

Free Technical Support

Our FREE Expert Consultancy Support is over the phone, by chat, by email or by login remotely.

100% Money Back Guarantee

You can contact our customer service team to exchange or return any product that you bought from us.


Standard Warranty Policy

Original New Sealed Enterprise Hardware: 3 Years
Original New Sealed Consumer Devices: 1 Year

The Support Contacts

If your NSComm products failed, you must contact your sales representative to verify product failure. If the problem still can't correct by remote support methods i.e. email or phone support, the RMA procedure will issue.

Customer Reviews

Based on 4 reviews
50%
(2)
25%
(1)
25%
(1)
0%
(0)
0%
(0)
S
Scarlett Reed7601
Highly recommend

Solid performance from these optical transceiver. Ordering was easy and everything arrived on time. Really easy to integrate. Ships fast.

M
Mason Wilson
Average

The optical transceiver do the job, though not outstanding. Documentation could be improved and delivery was slow. Not bad, but needs refinement. Setup was straightforward.

E
Ella Torres
Buena calidad

Instalaci��n algo lenta, aunque estable al final. Soporte respondi�� en pocas horas. Minor fan noise.

L
Logan Rivera
Great service

The optical transceiver are reliable and shipping was fast. Customer support is very professional. Really easy to integrate.

Learn More

Frequently Questions and Answers

Q1: What is a 40G QSFP+ optical transceiver?

A: A 40G QSFP+ optical transceiver is a high-speed module designed to support 40 Gigabit Ethernet data transmission, commonly used in data center and enterprise network environments.

Q2: What are the differences between QSFP-40G-SR4 and QSFP-40G-LR4?

A: QSFP-40G-SR4 is designed for short-range transmission over multimode fiber using parallel optics, while QSFP-40G-LR4 supports long-distance transmission over single-mode fiber using wavelength multiplexing.

Q3: What transmission distances do QSFP-40G-SR4 and QSFP-40G-LR4 support?

A: QSFP-40G-SR4 supports up to 100m over OM3 and 150m over OM4 multimode fiber, while QSFP-40G-LR4 supports up to 10km over single-mode fiber.

Q4: Are these 40G QSFP+ modules compatible with Cisco, Juniper, and HPE equipment?

A: Yes. These 40G QSFP+ transceivers are fully compatible with Cisco, Juniper, HPE, and other major networking brands, and are coded to meet MSA and device compatibility requirements.

Q5: Are these original brand or third-party transceivers?

A: These are brand-neutral third-party 40G optical transceivers that offer the same functionality and performance as original brand modules at a more cost-effective price.

Q6: What connector types are used by QSFP-40G-SR4 and QSFP-40G-LR4?

A: QSFP-40G-SR4 uses an MPO/MTP connector, while QSFP-40G-LR4 uses a standard LC duplex connector.

Q7: What wavelengths are used by QSFP-40G-SR4 and QSFP-40G-LR4?

A: QSFP-40G-SR4 operates at an 850nm wavelength, while QSFP-40G-LR4 uses four LAN-WDM wavelengths around 1310nm.

Q8: What fiber types are required for QSFP-40G-SR4 and QSFP-40G-LR4?

A: QSFP-40G-SR4 requires multimode fiber (OM3 or OM4), while QSFP-40G-LR4 requires single-mode fiber (OS2).

Q9: Do these 40G modules support hot-swapping?

A: Yes. All 40G QSFP+ modules support hot-swappable installation, allowing replacement or upgrades without powering down network devices.

Q10: Do QSFP-40G-SR4 and QSFP-40G-LR4 support Digital Diagnostic Monitoring (DDM)?

A: Yes. Both modules support DDM, providing real-time monitoring of temperature, voltage, laser bias current, and optical power.

Q11: What applications are these 40G optical transceivers typically used for?

A: These 40G modules are commonly used in data centers, enterprise core and aggregation networks, cloud computing environments, and high-bandwidth interconnects.

Q12: Are these QSFP+ modules tested before shipment?

A: Yes. Each 40G QSFP+ transceiver is individually tested for compatibility, optical performance, and reliability before delivery.

Q13: What is the operating temperature range of these 40G modules?

A: These modules typically support a commercial operating temperature range of 0°C to 70°C, suitable for standard data center environments.

Q14: Can these 40G transceivers be customized for specific switch models?

A: Yes. The modules can be customized or pre-configured to ensure compatibility with specific switch or router models upon request.

Q15: What warranty is provided for the 40G optical transceivers?

A: All 40G optical transceivers are backed by a standard warranty and technical support to ensure long-term reliability and peace of mind.

Refund Policy

At Network-switch.com, we aim to provide the best customer experience and ensure that your purchases meet your expectations. If for any reason you are not satisfied with your purchase, please read our return and refund policy below to understand your options.

Returns

You have the right to return products purchased from Network-switch.com under the following conditions:

  • Eligibility for Return: Items can be returned within 30 days from the date of delivery, provided that the product is in its original condition, unused, and in the original packaging.
  • Non-returnable Items: Certain items such as personalized or custom-made products, and items marked as non-returnable at the time of purchase, cannot be returned.
  • Return Process: To initiate a return, please contact our customer support team at help@network-switch.com. You will be provided with instructions on how to return the product and obtain a return authorization number if necessary.

Refunds

  • Refund Process: Once we receive your returned item and inspect it, we will process your refund to the original method of payment within 7 business days.
  • Refund Conditions: Refunds will be issued for the purchase price of the item, excluding any shipping, handling, or other additional fees. If the product is returned damaged, used, or missing parts, a partial refund may be issued.

Exchanges

If you would prefer to exchange an item for a different size, color, or model, please follow the same return process. Once we receive the returned product, we will send the replacement at no additional charge, based on availability.

Shipping Costs

  • Return Shipping Fees: You are responsible for paying the return shipping costs unless the item is defective, damaged, or incorrect.
  • Refund for Shipping Costs: Shipping costs are non-refundable, except in the case of defective or incorrect items.
  • Restocking Fees: You would be chagred about 30% of the product price when return the item, unless the item is defective, damaged, or incorrect.

Damaged or Incorrect Items

If you receive a damaged or incorrect item, please contact our customer service team within 7 days of receiving the product. We will exchange once the return is received.

Contact Us

If you have any questions or concerns about returns or refunds, please contact us at:
Email: help@network-switch.com

Before returning any products, please contact us to explain the issues you are experiencing. In many cases, we can resolve the problem through technical support, and you won't need to return the product.

If there are irreparable defects in the device, you can return it to us for repair or replacement under our twelve-month warranty. Simply reach out to us, and we will provide you with a return code, our return address, and any additional instructions.

Please do not return any items without first contacting us. We will guide you through the process, including the appropriate shipping methods.

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