BlueOptics QSFP-40G-ESR4-GM-BO network transceiver module Fiber optic 40 Mbit/s 850 nm

The BlueOptics QSFP-40G-ESR4-GM-BO is a QSFP network transceiver module for multimode fiber links. It supports a maximum data transfer rate of 40 Mbit/s at an operating wavelength of 850 nm and is designed for compact installation with a module weight of 40 g. The module implements a MPO/MTP multifiber connector and conforms to MSA QSFP form-factor standards, providing interoperability with hardware platforms that support compatible QSFP transceivers. With a specified mean time between failures (MTBF) of 1,000,000 hours, the transceiver is intended for continuous use in data center and high-density network environments where long-term availability and predictable maintenance windows are required.

Advantages

The module combines a QSFP interface with an MPO/MTP connector and 850 nm optical components to provide a compact solution for short-reach multimode fiber links. Low weight and standard QSFP mechanics simplify installation and hot-swap replacement in compatible switches, routers and storage systems. Integrated digital diagnostic monitoring (DDM/DOM) support enables remote monitoring of key operating parameters where the host hardware supports this feature. Compliance with QSFP MSA guidelines ensures mechanical and electrical interoperability with other compliant equipment.

Suitable for

• Short-reach multimode fiber links in data centers
• High-density switch or router uplinks using QSFP ports
• Environments requiring remote optical diagnostics (when supported by host)
• Replacement or spare transceivers for compatible network hardware

Key specifications

• Interface type: QSFP form factor with MPO/MTP connector
• Maximum data transfer rate: 40 Mbit/s
• Wavelength: 850 nm
• Fiber type: multimode fiber (MMF)
• Weight: 0.04 kg
• Digital diagnostics: supported when host hardware provides DDM/DOM access
• Mean time between failures (MTBF): 1,000,000 hours

How to use

Insert the QSFP-40G-ESR4-GM-BO module into a compatible QSFP port according to the host device instructions and secure any retention mechanism provided by the chassis. Connect an MPO/MTP multimode fiber patch cable to the transceiver's connector, observing proper polarity and fiber handling practices. If the host supports DDM/DOM, verify diagnostic readings through the management interface to confirm link status and optical parameters. Follow the network equipment vendor's guidance for link configuration, speed/duplex settings, and firmware compatibility to ensure the module operates as intended.

Recommendations

Use certified multimode MPO/MTP patch cords and maintain clean connector endfaces to preserve optical performance. Confirm that the destination device supports QSFP modules with the same optical characteristics and that the host supports DDM/DOM if remote diagnostics are required. Store and handle the transceiver in ESD-safe conditions and avoid exposing it to contaminants or mechanical stress during installation.