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QSFP-100G-LR4-S=
100GBASE LR4 QSFP TRANSCEIVER LC 10KM OVER SMF
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The QSFP-100G-LR4-S= is a high-performance Cisco QSFP28 transceiver designed to deliver reliable 100-Gigabit Ethernet connectivity over long-distance single-mode fiber. This Cisco QSFP-100G-LR4-S= module supports 100GBASE-LR4 applications, enabling seamless deployment across enterprise core networks, high-density data centers, and metro fiber infrastructures. With strong optical performance using four-wavelength multiplexing, it supports transmission distances up to 10 kilometers, making it ideal for long-range 100G backbone and aggregation links.
Engineered for consistent signal integrity and broad compatibility across Cisco platforms, the QSFP 100G LR4 S= module delivers low-latency transmission, high throughput, and simple plug-and-play installation. Its hot-swappable design enables rapid deployment or replacement without service interruption, providing a scalable and cost-efficient solution for organizations expanding their 100-Gigabit long-distance optical infrastructure.
Long-Range 100G Fiber Connectivity
Supports up to 10km over single-mode fiber for extended network reach.
100GBASE-LR4 Performance
Designed for long-distance 100-Gigabit Ethernet applications in enterprise and data center networks.
Hot-Swappable Design
Allows installation or replacement without impacting network operations.
Low-Latency Optical Transmission
Ensures stable, high-throughput performance for mission-critical workloads.
Single-Mode Fiber Support
Enables efficient long-range deployment across diverse optical infrastructures.
The QSFP-100G-LR4-S= module is compatible with major Cisco switching platforms, including:
This wide compatibility ensures smooth integration across enterprise, cloud, and high-performance data center environments.
QSFP-100G-LR4-S= price is $620.00, a 98.2% saving from the Cisco list price of $35,389.00. QSFP-100G-LR4-S= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFP-100G-LR4-S= for additional pricing. Browse the full Cisco 100G Optical Modules series or explore all Cisco products.
To get the detailed certification, please go to the Compliance Center.
| QSFP-100G-LR4-S= |  CFP-100G-SR10= |  CPAK-100G-LR4= |  CPAK-100GE-LR4= |  QSFP-100G-PSM4-S= | |
|---|---|---|---|---|---|
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista |
| Connector Type | LC | LC | LC | LC | LC |
| Data Rate | 100G | 100G | 100G | 100G | 100G |
| Depth | 2.5 inches | N/A | 1.06 in | N/A | N/A |
| Fiber Type | Single-mode | Multi-mode | Single-mode | Single-mode | Single-mode |
| Form Factor | QSFP | CFP | QSFP28 | QSFP28 | QSFP |
| Height | 0.65 inches | N/A | 0.24 in | N/A | N/A |
| Input Voltage | 3.3V | 3.3V / 5V | 3.3V | 3.3V | 3.3V |
| Max Distance | 10 km | 100 meters | 10 km | 10 km | 500 meters |
| Network Interface | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 4.0W | 10W | N/A | N/A | N/A |
| Product Name | QSFP-100G-LR4-S= | CFP-100G-SR10= | CPAK-100G-LR4= | CPAK-100GE-LR4= | QSFP-100G-PSM4-S= |
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet | Ethernet | Ethernet, Fibre Channel | Ethernet | Ethernet |
| Transmission Distance | Long-Range | Short-Range | Long-Range | Long-Range | Short-Range |
| Wavelength | 1310 nm | 850nm | 1310 nm | 1310 nm | 1310 nm |
| Weight | 0.20 lbs | N/A | N/A | N/A | N/A |
| Width | 0.55 inches | N/A | 0.87 in | N/A | N/A |
Reliable 100G LR4 transceiver achieving stable 10km SMF connectivity. Perfect for core network upgrades.
Delivered full 100G throughput with consistent optical levels.
Smooth installation and dependable long-haul performance.
Maintained clean signal integrity during peak traffic loads.
Excellent interoperability with our 100G switching environment.
Stable backbone connectivity and predictable latency.
High performance 100G solution for enterprise infrastructure.
The == is a 100GBASE-LR4 QSFP transceiver with LC duplex connectors designed for 10 km transmission over single-mode fiber.
This module is optimized for OS2 single-mode fiber (SMF) links up to 10 km.
It supports distances up to 10 kilometers over standard single-mode fiber.
The QSFP-100G-LR4-S= uses LC duplex connectors on the fiber interface.
It supports a 100 Gbps Ethernet data rate compliant with IEEE 802.3bm LR4.
It employs four LAN-WDM wavelengths from 1295 nm to 1325 nm.
Yes, it is hot-swappable for in-service plug-and-play installation without powering down.
Yes, it is fully compliant with the QSFP MSA and IEEE 802.3bm specifications.
The module consumes ≤3.5 Watts under nominal conditions.
It operates from 0 °C to 70 °C (commercial temperature range).
It interoperates with any standard 100GBASE-LR4 QSFP+ port from major switch and router vendors.
It supports IEEE 802.3bm 100GBASE-LR4 Ethernet.
The typical MTBF exceeds 1 million hours.
Simply insert the transceiver into an empty QSFP+ slot until it clicks and connect LC-terminated SMF cables.
No, it is designed for LAN-WDM LR4 applications and not for DWDM wavelength grids.
It includes a one-year limited warranty covering defects in materials and workmanship.