Fiber optic transceiver module BlueOptics QMM850-PLUS-CSR4-BO 40000 Mbit/s QSFP 850 nm

The BlueOptics QMM850-PLUS-CSR4-BO is a QSFP fiber optic transceiver module engineered for 40 Gbit/s optical links over multimode fiber. Operating at an 850 nm wavelength and fitted with an MPO/MTP connector, this compact module supports data transmission up to 300 m and is intended for use in standard QSFP slots on switches, routers, storage arrays and test equipment. The module includes real-time digital diagnostics (DDM/DOM) for monitoring voltage, laser current, optical power and temperature, and is specified with a long MTBF for sustained operation.

Advantages

The transceiver provides 40 Gbit/s aggregate throughput in a QSFP form factor with MPO/MTP connectivity, enabling high-density fiber deployments and simplified multi-fiber connections. Built to MSA-compatible mechanical and optical specifications, it is functionally compatible with common hardware platforms and test systems. Integrated digital diagnostic monitoring facilitates remote troubleshooting and maintenance. The module’s lightweight silver housing and robust component selection aim to ensure long operational life and stable optical performance.

Suitable for

Key specifications

How to use

Install the module into a compatible QSFP port following the host device manufacturer’s hot-plug and electrostatic discharge (ESD) precautions. Use MPO/MTP patch cables or harnesses matched to the module and the corresponding MPO/MTP port on the other end. Ensure both ends of the link use the appropriate multimode fiber type and that cable polarity is correct for your network design. If supported by the host, enable and read the digital diagnostics counters to verify supply voltage, laser bias current, transmit/receive power and module temperature during commissioning and troubleshooting.

Recommendations

For optimal performance, pair the transceiver with quality MPO/MTP multimode patch cords and maintain clean connector endfaces. Verify that the host hardware supports QSFP 40GBASE-ESR4 or equivalent multimode protocols and DDM/DOM functions. Observe manufacturer guidance on operating temperature and ESD protection; periodic validation of optical power and link integrity helps maintain long-term availability.