• Cisco QSFP-100G-LR4-S Compatible 100G QSFP28 LR4 Optical Transceiver Bulk Wholesale | HYTOPTODEVICE
  •  Front view 100G QSFP28 LR4 Transceiver 1310nm LC duplex optic for Cisco QSFP-100G-LR4-S replacement
  • Side profile MSA-compliant 100G QSFP28 LR4 Transceiver for enterprise long-reach network bulk upgrade
  • Interface close-up 100G QSFP28 LR4 Transceiver with real-time DDM optical parameter monitoring function
  • Low-BER LAN-WDM 100G QSFP28 LR4 Transceiver for single-mode long-distance data center transmission
  • Rewritable EEPROM 100G QSFP28 LR4 Transceiver for system integrator long-haul network project deployment
  • Cisco QSFP-100G-LR4-S Compatible 100G QSFP28 LR4 Optical Transceiver Bulk Wholesale | HYTOPTODEVICE
  •  Front view 100G QSFP28 LR4 Transceiver 1310nm LC duplex optic for Cisco QSFP-100G-LR4-S replacement
  • Side profile MSA-compliant 100G QSFP28 LR4 Transceiver for enterprise long-reach network bulk upgrade
  • Interface close-up 100G QSFP28 LR4 Transceiver with real-time DDM optical parameter monitoring function
  • Low-BER LAN-WDM 100G QSFP28 LR4 Transceiver for single-mode long-distance data center transmission
  • Rewritable EEPROM 100G QSFP28 LR4 Transceiver for system integrator long-haul network project deployment

Cisco QSFP-100G-LR4-S Compatible 100G QSFP28 LR4 Optical Transceiver Bulk Wholesale | HYTOPTODEVICE

Buy bulk 100G QSFP28 LR4 Transceiver fully compatible with Cisco QSFP-100G-LR4-S. 1310nm LAN-WDM single-mode 10km reach with LC Duplex Connector, full DDM/DOM real-time monitoring, Support small sample testing, OEM private labeling, custom EEPROM coding for multi-brand network deployment. bulk wholesale for global import distributors and enterprise end users.
NO. Brand  Compatible P/N Remarks
1 Cisco  QSFP-100G-LR4-S 
2 Arista Networks  QSFP-100G-LR4
3 Brocade  100G-QSFP28-LR4-LP-10KM
4 Dell  Q28-100G-LR4
5 H3C  QSFP-100G-LR4-WDM1300
6 HPE Aruba  JL310A
7 Huawei  QSFP-100G-LR4 
8 Juniper Networks  QSFP-100G-LR4-D
9 NVIDIA(Mellanox)  MMA1L10-CR
Description
Cisco QSFP-100G-LR4-S Compatible 100GBASE-LR4 100G QSFP28  LR4 Transceiver | HYTOPTODEVICE(10km, SMF, 1310nm, Duplex LC, DOM)

Product Overview

HYTOPTODEVICE 100G QSFP28 LR4 Transceiver is a fully IEEE 802.3ba and MSA compliant optical solution engineered to substitute original Cisco QSFP-100G-LR4-S modules. It delivers 103.125Gbps total bandwidth via four independent 25.78Gbps NRZ optical lanes with 1295nm–1310nm LAN-WDM wavelength range, adopting professional single-mode EML laser design and duplex LC UPC connector. Supporting stable error-free 10km long-reach transmission over standard single-mode fiber, this optic integrates high-precision clock data recovery and complete SFF-8636 DDM monitoring. Optimized for data center DCI interconnection, core switch backbone uplink and enterprise long-distance 100G network migration, bulk 100G QSFP28 LR4 Transceiver supports custom EEPROM rewriting to eliminate vendor lock-in alerts in multi-vendor network environments.

Key Technical Specifications

This industrially calibrated 100G QSFP28 LR4 Transceiver features four-channel parallel LAN-WDM signal transmission and strict factory parameter calibration, fully matching the optical and electrical indicators of Cisco QSFP-100G-LR4-S. Supporting hot-swappable live port replacement and commercial-grade rack operation, it delivers low-jitter, error-free 10km long-reach transmission for enterprise and data center single-mode networking scenarios.
Cisco Compatible QSFP-100G-LR4-S  Vendor Name HYTOPTODEVICE
Form Factor QSFP28 Max Data Rate 103.125Gbps (4x 25.78Gbps)
Wavelength 1295.56nm,1300.05nm,
1304.58nm,1309.14nm
Max Distance 10km
Connector Duplex LC Transmitter Type 4 x LAN WDM EML
Cable Type SMF Receiver Type PIN
Modulation (Electrical) 4x 25G-NRZ TX Power -4.3~+4.5dBm
Power Consumption < 3.5W Receiver Sensitivity < -10.6dBm
Protocols 100G Ethernet, MSA Compliant Operation Temperature 0 to 70°C (32 to 158°F)

Full Compatibility List & Supported Network Hardware

1.Native Cisco Compatibility

All 100G QSFP28 LR4 Transceiver units complete real-device debugging and long-time traffic testing on official Cisco equipment, achieving perfect drop-in replacement for QSFP-100G-LR4-S with zero recognition alarms and complete DDM parameter display. Standard firmware coding ensures native compatibility with Cisco IOS/IOS-XE/NX-OS systems without manual configuration.
Compatible Cisco Hardware Models:
  • Cisco Nexus 9000 / 3000 Series 100G Fabric Switches
  • Cisco Catalyst 9000 Series Enterprise Core Switches
  • Cisco ASR 1000 Series High-Speed Routers
  • Cisco UCS Server High-Speed Network Uplink Ports
  • Cisco Data Center 100GBASE-LR4 Standard Port Platforms

2.Multi-Brand Cross Compatibility

Built strictly to industry MSA standards, HYTOPTODEVICE’s QSFP-100G-LR4-S  breaks vendor lock-ins, delivering seamless interoperability across diverse network environments.

  • Open-Brand Devices (Plug-and-Play): 100% natively compatible with open-architecture brands like Ciena, Fortinet, Ubiquiti, MikroTik, D-Link, Zyxel, and more.

  • Locked-Brand Devices (Advanced Coding): Powered by our proprietary EEPROM writing technology, our transceivers successfully bypass vendor encryptions to ensure 100% compatibility with Cisco, H3C, Juniper, Dell, Intel, and the latest updated Arista firmware versions.

3.Free Custom EEPROM Re-Flash Service
To future-proof your investment, we offer a free firmware re-flash service. If you upgrade your switch OS or migrate the 100G transceiver to a different brand in the future, we will re-code it to guarantee a 100% stable link.


Primary Application Scenarios

This high-stability single-mode 100G QSFP28 LR4 Transceiver is specialized for 10km long-distance transmission scenarios, adapting to data center cross-room interconnection, enterprise core network backbone construction and long-range 100G bandwidth upgrade with reliable LAN-WDM optical transmission performance.
  • 100G QSFP28 LR4 Transceiver bulk replacement for aging Cisco QSFP-100G-LR4-S modules during core network upgrade
  • Long-reach data center DCI interconnection using 100G QSFP28 LR4 Transceiver for cross-building 100G high-speed links
  • Enterprise backbone network construction deploying 100G QSFP28 LR4 Transceiver for stable 10km single-mode transmission
  • Wide-area campus network iteration with low-error-rate 100G QSFP28 LR4 Transceiver for long-distance trunk links
  • System integrator customized EEPROM 100G QSFP28 LR4 Transceiver for multi-brand long-haul network projects
  • ISP edge room networking adopting standard-compliant 100G QSFP28 LR4 Transceiver for 100G long-distance bandwidth expansion


Connectivity Solutions(Applications)

1. 100G Switch-to-Switch Interconnection

Deploy paired custom compatible 100G QSFP28 LR4 Transceiver with standard G.652 single-mode fiber to build reliable 10km 100G switch-to-switch backbone links. This solution delivers low-BER, jitter-free long-distance transmission, perfectly fitting Cisco core switch aggregation and cross-room data center backbone networking.

Cisco compatible 100G QSFP28 LR4 Transceiver for 10km single-mode data center core switch interconnection

2.100G Switch-to-NIC Direct Connection

Adopt high-stability 100G QSFP28 LR4 Transceiver for direct switch-to-server NIC docking deployment. It breaks long-distance transmission limitations of short-range multimode modules, supporting stable 10km remote server uplink access for distributed data center and enterprise remote machine room networking.

 Low latency 100G QSFP28 LR4 Transceiver for remote server NIC high-speed uplink networking

3.100G Long-haul Switch Link with
Structured Cabling

Apply standard-compliant 100G QSFP28 LR4 Transceiver to enterprise and data center structured single-mode cabling systems. It adapts to hierarchical network architecture layout, realizing standardized, scalable 100G long-haul switch interconnection for large-scale campus and enterprise network upgrade projects.
Scalable 100G QSFP28 LR4 Transceiver for enterprise structured single-mode cabling upgrade


Feature | 100G Connectivity for Data Center

HYTOPTODEVICE compatible 100G QSFP28 LR4 transceiver delivers ultra-stable 100Gbps transmission with industry-leading low power consumption. Engineered for maximum reliability in high-density data center environments.

cisco compatible 100g qsfp28 lr4 module from hytoptodevice

Optical Transceiver Compatibility Guide: Cisco, Juniper & Arista Switch Support Matrix

Cisco Catalyst 9500 Series — Compatible HYTOPTODEVICE Transceivers
Cisco OEM Part HYTOPTODEVICE SKU Speed Form Factor Reach Tested Firmware
QSFP-100G-LR4-S HYT-QSFP28-LR4 100G QSFP28 10km SMF IOS-XE 17.6+


FAQ

Q1: Can custom-coded HYTOPTODEVICE 100G QSFP28 LR4 Transceiver run flawlessly on Cisco, Arista and Juniper enterprise switches?
A: Yes. Our 100G QSFP28 LR4 Transceiver supports professional custom EEPROM vendor coding, which effectively bypasses OEM unsupported transceiver CLI restrictions. Pre-configured firmware perfectly adapts to Cisco, Arista, Juniper and other mainstream brand switches to achieve seamless plug-and-play operation.

Q2: Will deploying HYTOPTODEVICE third-party 100G QSFP28 LR4 Transceiver invalidate original network switch hardware warranty?
A: No. In accordance with international equipment warranty regulations, switch manufacturers cannot void official hardware warranty merely for using qualified third-party optical transceivers. Our compliant 100G QSFP28 LR4 modules will not affect original device warranty validity.

Q3: What is the maximum stable transmission distance of factory-calibrated 100G QSFP28 LR4 Transceiver on standard single-mode fiber?
A: Our standard 100G QSFP28 LR4 Transceiver delivers stable error-free transmission up to 10km on conventional G.652/G.657 single-mode fiber. With ultra-clean, low-splice high-quality fiber links, it can achieve an extended transmission distance of 11–12km for special networking scenarios.

Q4: Is there a minimum fiber distance requirement to protect receiver ports of high-performance 100G QSFP28 LR4 Transceiver?
A: Standard PIN receiver versions of our 100G QSFP28 LR4 Transceiver have no minimum transmission distance limit. For high-sensitivity APD receiver models, a minimum 2km fiber link or matched optical attenuator is required to avoid receiver burnout from excessive optical power.

Q5: What is the peak power consumption of bulk 100G QSFP28 LR4 Transceiver and will it cause high-density switch overheating?
A: Our premium 100G QSFP28 LR4 Transceiver features optimized power management, with peak power consumption ranging from 3.5W to 4.5W. For fully loaded high-density 48-port switches, sufficient chassis airflow is required to avoid thermal stress and ensure long-term stable module operation.

Q6: What power dissipation class do commercial-grade HYTOPTODEVICE 100G QSFP28 LR4 Transceiver belong to? A: All our standard commercial 100G QSFP28 LR4 Transceiver strictly comply with Class 3 power standards with power consumption below 3.5W. Only customized industrial-grade modules adopt enhanced designs that may reach Class 4 power dissipation (up to 4.5W).

Q7: Is FEC function mandatory for 10km long-reach transmission of IEEE-compliant 100G QSFP28 LR4 Transceiver?
A: Per IEEE 802.3ba industry standards, FEC is not a mandatory requirement for standard 10km transmission of 100G QSFP28 LR4 Transceiver. However, most modern enterprise switches enable FEC by default to eliminate bit errors and achieve more stable long-haul link transmission.

Q8: Why do DDM Rx power monitoring data of compatible 100G QSFP28 LR4 Transceiver display N/A or inaccurate values on switches?
A: Inaccurate or missing DDM receive power data is mainly caused by incomplete factory calibration parameters in module firmware or protocol communication mismatch with switch NOS. Our HYTOPTODEVICE modules undergo full DDM calibration to ensure real-time, accurate monitoring data display.

Q9: What core advantages does 100G QSFP28 LR4 Transceiver have over 100G LR1 single-lambda optical modules for data center networking?
A: Our 100G QSFP28 LR4 Transceiver adopts mature 4×25G multi-lane transmission architecture, offering native compatibility with all legacy and mainstream 100G switches. In contrast, 100G LR1 modules use 100G PAM4 modulation, which requires additional gearbox support and cannot be identified by older switch devices.

Q10: What laser components are built into industrial-grade 100G QSFP28 LR4 Transceiver for 10km single-mode transmission?
A: All our standard 100G QSFP28 LR4 Transceiver are equipped with high-quality EML electro-absorption modulated lasers. EML lasers deliver superior signal integrity and anti-attenuation performance for 10km long-distance transmission, far exceeding the stability of low-cost DML lasers that are unsuitable for 100G long-haul scenarios.


Brand & Service Advantage 

As a professional global supplier of data center optical transceivers, HYTOPTODEVICE focuses on R&D and bulk supply of high-compatibility 100G QSFP28 LR4 Transceiver compatible with Cisco QSFP-100G-LR4-S. Every batch undergoes strict optical parameter calibration, long-term aging testing and multi-brand real-machine interoperability verification. We provide sample testing, custom EEPROM vendor coding, OEM private labeling, fast global logistics and 5-year factory warranty, helping enterprise clients reduce procurement costs while maintaining stable 10km long-reach 100G network transmission performance.

Why Network Engineers Choose HYTOPTODEVICE

HYTOPTODEVICE has supplied over 5000,000 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.

  • Up to 70% cost savings vs OEM, transparent pricing & flexible bulk rates, supported quality returns
  • 100% real-device compatible with Cisco, Huawei,Dell,Juniper, and Arista
  • ISO 9001:2015 Shenzhen factory, full lineup: 1.25G/10G/25G/40G/100G/200G/400G/800G/1.6T transceivers
  • Ample stock, fast global DHL/FedEx shipping in 3–5 working days
  • Free pre-sales engineering support for custom EEPROM  & private label firmware
  • Real switch test videos available for pre-purchase review; inspection & shipping videos provided per order

“Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia

Quality Certification & Compliance

 At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, 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

   hytoptodevice check device and equiptment for optical transceiver module

100% 3rd Party Compatible
hytoptodevice 100g qsfp28 sr4 replacement
Partial Test Demonstration
hytoptodevice compatible optical transceiver module for ethernet,data center

Others
HYTOPTODEVICE 100G QSFP28 TRANSCEIVER sr4 application for data center,ethernet

 



 

 

 

  • Cisco QSFP-100G-LR4-S Compatible 100G QSFP28 LR4 Optical Transceiver Bulk Wholesale | HYTOPTODEVICE
  •  Front view 100G QSFP28 LR4 Transceiver 1310nm LC duplex optic for Cisco QSFP-100G-LR4-S replacement
  • Side profile MSA-compliant 100G QSFP28 LR4 Transceiver for enterprise long-reach network bulk upgrade
  • Interface close-up 100G QSFP28 LR4 Transceiver with real-time DDM optical parameter monitoring function
  • Low-BER LAN-WDM 100G QSFP28 LR4 Transceiver for single-mode long-distance data center transmission
  • Rewritable EEPROM 100G QSFP28 LR4 Transceiver for system integrator long-haul network project deployment

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