QSFP Transceiver Module BlueOptics QSFP-40G-ESR4-LS-BO 40 Mbit/s 850 nm

The BlueOptics QSFP-40G-ESR4-LS-BO is a QSFP transceiver module for 40 Gigabit Ethernet applications. It supports a maximum data transfer rate of 40 Mbit/s over multimode fiber using an 850 nm wavelength and an MPO/MTP fiber connector. The module is designed to fit QSFP MSA-compliant ports and is intended for use in switches, routers and other networking hardware that accept QSFP transceivers. With a compact form factor and a weight of approximately 40 g, the module is intended for easy installation in data center and enterprise networking environments.

Advantages

This transceiver provides a standardized QSFP interface and MPO/MTP connectivity for aggregated 40 Gigabit Ethernet links. It supports a stated maximum transfer distance of up to 300 m over suitable multimode fiber and includes a mean time between failures (MTBF) value of 1,000,000 hours that indicates design focus on long operational life. The module is compatible with common QSFP slots and is lightweight, making it simple to deploy and replace in rack-mounted network equipment.

Suitable for

• Aggregation links between switches and routers in data centers
• High-speed server uplinks and top-of-rack connectivity
• Short‑reach multimode fiber connections up to 300 m
• Hardware platforms that support QSFP MSA-compliant 40G transceivers

Key specifications

• Maximum data transfer rate: 40 Mbit/s
• Wavelength: 850 nm
• Maximum transfer distance over multimode fiber: 300 m
• Ethernet interface type: 40 Gigabit Ethernet
• Fiber optic connector: MPO/MTP
• Weight: 0.04 kg
• Mean time between failures (MTBF): 1,000,000 hours

How to use

Install the QSFP transceiver into a compatible QSFP slot on supported network equipment following the equipment manufacturer's hot‑plug and electrostatic discharge (ESD) procedures. Connect an MPO/MTP multimode fiber patch cable to the module and route the cable to the corresponding transceiver or patch panel. Verify link status and speed through the host device management interface. If the host supports digital diagnostic monitoring (DDM/DOM), use the management tools to monitor optical parameters and verify proper operation.

Recommendations

Use OM3/OM4 multimode fiber for distances approaching the 300 m maximum to maintain signal quality. Ensure host hardware firmware supports third‑party QSFP transceivers if required by the platform. Observe ESD precautions during installation and avoid excessive bending or stress on MPO/MTP fiber connectors to preserve link performance.