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

The BlueOptics QSFP-40G-ESR4-AO-BO is a QSFP fiber optic transceiver module designed for 40 Gigabit Ethernet links over multimode fiber. It supports a maximum data transfer rate of 40 Mbit/s and operates at an 850 nm wavelength. The module uses an MTP/MPO fiber connector and is specified for optical reach up to 300 m. With a compact form factor and a lightweight of 40 g, the transceiver is intended for integration into switches, routers and other network devices that accept QSFP modules and MSA-compliant optics.

Advantages

The module follows MSA (Multi-Source Agreement) QSFP mechanical and electrical specifications to ensure interoperability with compatible hardware. It implements both transmitter and receiver functions at 850 nm for multimode fiber transmission, offers Digital Diagnostic Monitoring (DDM/DOM) support when the host hardware exposes the interface, and is assembled with components selected for long operational life and stable performance. The transceiver’s MPO/MTP interface facilitates multi-channel fiber connectivity and simplifies high-density cabling.

Suitable for

• 40 Gigabit Ethernet links in data center aggregation and spine switches
• High-speed interconnects between switches, routers and storage systems
• Short-reach multimode fiber runs up to 300 meters
• Environments requiring QSFP-form-factor pluggable optics with MPO/MTP connectivity

Key specifications

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

How to use

Install the transceiver into a compatible QSFP slot on the host device while the device is powered down or following the host vendor’s hot-plug procedures. Connect an appropriate MTP/MPO multimode fiber patch cord to the transceiver and route it to the remote module or patch panel. Ensure the host device supports the QSFP form factor and any digital diagnostic monitoring features you intend to use. Verify link negotiation and interface settings on the network equipment after physical installation.

Recommendations

For reliable operation, use multimode fiber and patch cords rated for 850 nm transmission and ensure end-to-end channel loss and polarity match system requirements. Confirm DDM/DOM support in the connected hardware to enable real-time monitoring of supply voltage, laser bias current, output power, input power and temperature. Follow ESD precautions during handling and keep fiber connectors clean to maintain signal quality.