Transceiver CBO QSFP28-100G-LR4 Fiber Optic 100G LR4

The Transceiver CBO QSFP28-100G-LR4 Fiber Optic 100G LR4 is a QSFP28 form-factor optical module designed for 100 Gigabit Ethernet over single-mode fiber. It supports LR4 links for long-reach connections and is intended for interconnects between switches, routers and other data centre equipment. The module provides four parallel optical lanes aggregated to a single 100G interface, delivering high-bandwidth connectivity for backbone and aggregation layers.

Advantages

This transceiver offers long-reach single-mode performance with standardized QSFP28 compatibility, allowing straightforward integration into existing 100G ports. It supports low-latency, high-throughput links and is suitable for dense deployments where space and power efficiency are important. The module is hot-pluggable and designed to comply with industry electrical and optical interface specifications for reliable operation in networking environments.

Suitable for

• 100 Gigabit Ethernet links between switches and routers
• Data center spine and leaf interconnects
• Long-reach single-mode fiber backbone connections
• Aggregation links in service provider networks

Key specifications

• Form factor: QSFP28 (quad small form-factor pluggable)
• Data rate: 100 Gbit/s aggregated
• Optical type: single-mode fiber, LR4 (long reach, 4 wavelengths)
• Interface: 4×25G lanes multiplexed to 100G
• Wavelength: multiplexed CWDM wavelengths for LR4 operation
• Connector type: duplex LC (or compatible LR4 connector standard)
• Hot-pluggable transceiver module designed for rackmount networking devices

How to use

Install the QSFP28 module into a compatible 100G-capable QSFP28 port on switches, routers or optical equipment according to the host device instructions. Use single-mode fiber patch cords and appropriate LC duplex adapters or MPO-to-LC breakout assemblies as required by the LR4 interface. Ensure correct cable routing, secure connections and verify link status via the network device management interface. Follow manufacturer guidance for handling the optical interface and take electrostatic discharge precautions when inserting or removing the module.

Recommendations

For optimal performance, use single-mode fiber infrastructure certified for long-reach LR4 links and maintain clean connectors to minimize optical loss. Verify compatibility with the host device firmware and QSFP28 port settings; if necessary, update device drivers or firmware to support third-party transceivers. Monitor link parameters and perform routine inspections to ensure stable 100G operation.