---
product_id: 161439647
title: "QSFPTEK 40G QSFP+ Module LC Single-Mode Transceiver 40GBASE-LR4 for Cisco QSFP-40G-LR4, 4 CWDM Lanes, 10km, with DDM"
price: "KSh37616"
currency: KES
in_stock: true
reviews_count: 3
url: https://www.desertcart.co.ke/products/161439647-qsfptek-40g-qsfp-module-lc-single-mode-transceiver-40gbase-lr4
store_origin: KE
region: Kenya
---

# 40G high-speed data transfer 10km single-mode fiber reach Built-in Digital Diagnostic Monitoring (DDM) QSFPTEK 40G QSFP+ Module LC Single-Mode Transceiver 40GBASE-LR4 for Cisco QSFP-40G-LR4, 4 CWDM Lanes, 10km, with DDM

**Price:** KSh37616
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your network to lightning-fast 40G speeds and never look back!

## Quick Answers

- **What is this?** QSFPTEK 40G QSFP+ Module LC Single-Mode Transceiver 40GBASE-LR4 for Cisco QSFP-40G-LR4, 4 CWDM Lanes, 10km, with DDM
- **How much does it cost?** KSh37616 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/161439647-qsfptek-40g-qsfp-module-lc-single-mode-transceiver-40gbase-lr4)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Hot Swappable:** Minimize downtime with effortless hot-pluggable design for mission-critical uptime.
- • **Precision-Engineered with DDM:** Real-time diagnostics ensure peak performance and proactive network health monitoring.
- • **Blazing 40GBASE-LR4 Performance:** Experience ultra-fast 40Gbps throughput for next-level network efficiency.
- • **Extended 10km Single-Mode Reach:** Seamlessly connect across long distances with reliable 10km fiber transmission.
- • **Universal Cisco & Multi-Vendor Compatibility:** Works flawlessly with Cisco and 200+ open switch brands for ultimate flexibility.

## Overview

The QSFPTEK 40G QSFP+ Module LC Single-Mode Transceiver 40GBASE-LR4 delivers blazing 40Gbps data rates over single-mode fiber up to 10km. Fully compatible with Cisco and 200+ switch vendors, it features hot-pluggable design and built-in Digital Diagnostic Monitoring (DDM) for real-time performance insights. Engineered for data centers, campus, and enterprise networks, this transceiver ensures reliable, low-power, and high-speed connectivity with rigorous compatibility testing.

## Description

desertcart.com: QSFPTEK 40G QSFP+ Module LC Single-Mode Transceiver 40GBASE-LR4 for Cisco QSFP-40G-LR4, 4 CWDM Lanes, 10km, with DDM : Electronics

Review: Now to upgrade everything else - This was my first 100Gb transceiver for my home. I'm only running 10G at home so couldn't max it out here. I did drag it into the office and dropped it into a development server there and was able to verify that it is blazing fast. Now I just have to find spare cash to upgrade my home network. Do I need 100G at home? Nope. Do I want it? Of course!
Review: Reliable Transceiver For Mission Critical Fibre Network Connections - We have started using these 100G QSFP28 multimode transceivers with our Cisco QSFP-100G-SR4-S units and we haven't looked back. The speed, reliability and functionality of this QSFPTEK transceiver is absolutely phenomenal. I highly recommend these 100G QSFP28 units for mission critical fibre network connections.

## Features

- The 40GBASE-SR4 QSFP+ transceivers, it's fully compliant and compatible for Cisco networks, compatible with 200+ open switch vendors
- 40GBASE-SR4 Module, 100m on OM3 MMF and 150m on OM4 MMF, Multimode Fiber, Low Pwer Consumption <0.7W.
- Hot Pluggable, Temp.range 0°C to 70°C, QSFP MSA and RoHS Compliant and DDM support
- Widely used on large data centers, campus and computing networks, Proprietary interconnections between switches, routers, servers, NICs and transmission equipment
- We owns compatibility LAB facilities to meet the EEPROM coding and writing requirements with various brands of the latest and advanced networking equipments to ensure the reliability. Each transceiver is individually tested and programmed compatibility before delivery.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #229 in Computer Networking Transceivers |
| Customer Reviews | 5.0 out of 5 stars 9 Reviews |

## Images

![QSFPTEK 40G QSFP+ Module LC Single-Mode Transceiver 40GBASE-LR4 for Cisco QSFP-40G-LR4, 4 CWDM Lanes, 10km, with DDM - Image 1](https://m.media-amazon.com/images/I/51WiCtqVUNL.jpg)
![QSFPTEK 40G QSFP+ Module LC Single-Mode Transceiver 40GBASE-LR4 for Cisco QSFP-40G-LR4, 4 CWDM Lanes, 10km, with DDM - Image 2](https://m.media-amazon.com/images/I/51lDjfQnDsL.jpg)
![QSFPTEK 40G QSFP+ Module LC Single-Mode Transceiver 40GBASE-LR4 for Cisco QSFP-40G-LR4, 4 CWDM Lanes, 10km, with DDM - Image 3](https://m.media-amazon.com/images/I/61+MKoJzc9L.jpg)
![QSFPTEK 40G QSFP+ Module LC Single-Mode Transceiver 40GBASE-LR4 for Cisco QSFP-40G-LR4, 4 CWDM Lanes, 10km, with DDM - Image 4](https://m.media-amazon.com/images/I/61778gbFfXL.jpg)
![QSFPTEK 40G QSFP+ Module LC Single-Mode Transceiver 40GBASE-LR4 for Cisco QSFP-40G-LR4, 4 CWDM Lanes, 10km, with DDM - Image 5](https://m.media-amazon.com/images/I/512auPDKmaL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Now to upgrade everything else
*by T***R on August 24, 2025*

This was my first 100Gb transceiver for my home. I'm only running 10G at home so couldn't max it out here. I did drag it into the office and dropped it into a development server there and was able to verify that it is blazing fast. Now I just have to find spare cash to upgrade my home network. Do I need 100G at home? Nope. Do I want it? Of course!

### ⭐⭐⭐⭐⭐ Reliable Transceiver For Mission Critical Fibre Network Connections
*by J***S on June 29, 2025*

We have started using these 100G QSFP28 multimode transceivers with our Cisco QSFP-100G-SR4-S units and we haven't looked back. The speed, reliability and functionality of this QSFPTEK transceiver is absolutely phenomenal. I highly recommend these 100G QSFP28 units for mission critical fibre network connections.

### ⭐⭐⭐⭐⭐ Ya compré otro
*by J***Z on April 17, 2025*

Pensé que llegarías dos pero resulta que compré solo uno

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**Shop now:** [https://www.desertcart.co.ke/products/161439647-qsfptek-40g-qsfp-module-lc-single-mode-transceiver-40gbase-lr4](https://www.desertcart.co.ke/products/161439647-qsfptek-40g-qsfp-module-lc-single-mode-transceiver-40gbase-lr4)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-03-17*