Cisco QSFP-100G-ER4L-S Compatible 100G QSFP28 ER4 Optical Transceiver Module | HYTOPTODEVICE

The QSFP-100G-ER4L-S (ER4-Lite) compatible transceiver is an enterprise-grade 100Gbps QSFP28 module, optimized for high-capacity Data Center Interconnects (DCI) and metro networking. Utilizing advanced 1310nm LAN-WDM technology, it delivers a robust 40km reach over Single-Mode Fiber (SMF)  with Duplex LC connector. This module is engineered for seamless "Plug-and-Play" integration into Cisco NX-OS and IOS-XE environments, providing a high-reliability, low-cost alternative to OEM optics without compromising signal integrity.supporting DDM/DOM.

Our Cisco 100G ER4 compatible  module is verified and 100% compatible with Cisco’s leading platforms, including:

• Cisco Nexus 9000 Series: 9300, 9500 (e.g., N9K-C93180YC-FX).

• Cisco ASR 9000 Series Routers: With compatible 100G line cards.

• Cisco NCS 5500 Series: NCS-5501, NCS-55A1 routers.

• Cisco Catalyst 9500/9600 Series: High-performance enterprise core.

• Data Center Interconnect (DCI): Linking remote facilities up to 40km apart.

• Metro Ethernet: High-speed 100G backhaul for city-wide fiber rings.

• Campus Backbone: Connecting core switches across large university or corporate campuses.
  
  

 Connectivity Solutions(Applications)









Feature

HYTOPTODEVICE Cisco S-Class 100G transceiver delivers ultra-stable 100Gbps transmission with industry-leading low power consumption. Engineered for maximum reliability in high-density data center environments.

FAQ for 100G  QSFP28 ER4 Optical Module

Q1:What is QSFP28 100G ER4 module? A:The 100G ER4 is a hot pluggable optical transceiver module.It is typically built in a QSFP28 form factor, uses a SMF to transmit distance up to 40km  through 1310nm LAN-WDM technology.

Q2:Do I need an attenuator for short-distance links?A:Yes,The 100g er4 module use the high-sensitivity receiver and powerful transmitter. for protecting them,an optical attenuator is required for links less than 20km.

Q3:What fiber and connector does this 100g er4 module use?A:The 100G ER4 module uses duplex LC connector with SMF.

Q4:Does the QSFP-100G-ER4L-S support real-time monitoring?A:Yes, it supports Digital Optical Monitoring (DOM) for real-time monitoring of optical power,laser bias current,temperature and voltage.

Q5::What does "ER4" stand for in 100G ER4?A: ER4 stands for "Extended Reach with 4-Channel". It uses 4 x LAN WDM (1295、1300、1305、1310nm) technology  to transmit 100G traffic over SMF up to 40km.

Q6:Can I use this module with a single strand of fiber (Simplex)?A: No.The 100G QSFP28 ER4 module requires two strands of single-mode fiber: one for transmitting (TX) and one for receiving (RX). you can not transmit data by a single strand of fiber.

Q7:Q: What are the technical differences between 100G ER4 vs 10G ER? A: The difference as follow:

Q8:Can I use this in an outdoor enclosure?A: NO.the QSFP-100G-ER4L-S is for Commercial Temperature (C-Temp) rated for 0°C to 70°C. if you want to use it in outdoor enclosure. the Industrial Temperature (I-Temp) 100G ER4 module was recommended.

 Q9:Can QSFP 100G QSFP28 ER4 module be linked with 10G SFP+ER?A:NO, you can not connect 100G ER4 with 10G ER. Their speed  is different(100G vs 10G),  different wavelengths (1310nm vs 1550nm), and they operate different modulation techniques.

Q10:Is 100GBASE-ER4 1310nm module hot pluggable?A:Yes,HYTOPTODEVICE 100g optical modules are hot-pluggable, hot Pluggable QSFP28 MSA Compliant.you can plug or unplug the optical module without damaging the device.

Q11:How do you ensure quality testing for 100g  QSFP ER4?

A: At HYTOPTODEVICE, we maintain a comprehensive quality management system integrated with rigorous, multi-stage testing. Every optical transceiver module undergoes extensive evaluation to ensure it exceeds industry standards for reliability, high-speed performance, and multi-vendor compatibility. We don't just ship products; we deliver verified network stability.use it with peace of mind.

Why Network Engineers Choose HYTOPTODEVICE

HYTOPTODEVICE has supplied over 500,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.

• 100% MSA-compliant modules with Cisco, Huawei,Dell,Juniper, and Arista compatibility
• ISO 9001:2015 certified manufacturing facility in Shenzhen
• Average lead time of 3–5 business days with DHL/FedEx express options
• Dedicated pre-sales engineering support for custom configurations
• Actual hardware,actual switches,actual results.we publish compatibility test video,eliminate compatibility anxiety. you can watch before you buy. 
• We can provide inspection and shipping videos to make you feel as if you are right here with the product.

"We replaced 200 Cisco-branded SFPs with HYTOPTODEVICE equivalents across our spine layer — zero compatibility issues, 40% cost reduction."— Network Architect, Tier-2 ISP, Germany

Quality Certification & Compliance：

 At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final inspection, our processes ensure global compliance and reliability.

We adhere to rigorous standards for our SFP modules and network solutions:

• ISO 9001: Certified quality management and production consistency.

• CE & FCC: Fully compliant for seamless Global Market Access.

• RoHS: Committed to environmental responsibility and hazardous material control.

• Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.

Certified Quality. Global Standards. Guaranteed Performance.

Rigorous Industrial Product Testing：

   

100% 3rd Party Compatible：

Partial Test Demonstration：

Others: