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

The BlueOptics QSFP-40G-ESR4-BC-BO is a QSFP fiber optic transceiver module designed for 40 Mbit/s data transmission over multimode fiber. It uses an 850 nm wavelength for both transmitter and receiver and connects via an MTP/MPO fiber connector. The module supports a maximum link distance of up to 300 m and implements the QSFP electrical and mechanical interface defined by MSA standards. With an MTBF of 1,000,000 hours and a lightweight 40 g form factor, it is suitable for rack-mounted equipment in data centers and high-performance network environments.

Advantages

The module offers compatibility with QSFP MSA-compliant hardware and supports simultaneous transmit and receive channels via an MPO/MTP interface. Its digital diagnostic monitoring capability enables real-time access to parameters such as supply voltage, laser bias current, optical output and input power and temperature when the host device supports DDM/DOM. Components are selected to meet industrial quality standards and the product is manufactured in compliance with CE and RoHS requirements.

Suitable for

• 40 Gigabit Ethernet links in data centers
• Interconnects between switches, routers and storage systems
• Short-reach multimode fiber connections up to 300 m
• High-density pluggable optics deployments using MPO/MTP cabling

Key specifications

• Maximum data transfer rate: 40 Mbit/s
• Wavelength: 850 nm (Tx/Rx)
• Maximum transfer distance: up to 300 m over multimode fiber
• Interface type: QSFP (40 Gigabit Ethernet)
• Fiber connector: MTP/MPO
• Weight: 0.04 kg
• Digital diagnostic monitoring (DDM/DOM): supported when host hardware provides support
• Compliance: MSA QSFP mechanical/electrical specifications, CE and RoHS

How to use

Install the transceiver into a compatible QSFP slot of your switch, router or storage device following the device manufacturer's hot‑plugging or handling guidelines. Use an appropriate MPO/MTP multimode fiber patch cord or patch panel to connect to the distant transceiver or patching infrastructure. Verify host compatibility and enable DDM/DOM in the host system if you require real-time diagnostic readouts. Observe standard ESD precautions and avoid bending or stressing fiber cables beyond recommended radii to maintain signal quality and module lifetime.

Recommendations

For optimal performance, pair the transceiver with multimode fiber and MPO/MTP patch cords rated for 850 nm transmission and test the link using certified fiber testing equipment. Ensure the host hardware supports the QSFP MSA interface and DDM/DOM if monitoring is required, and follow manufacturer maintenance schedules to achieve the stated MTBF.