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

The BlueOptics QSFP-40G-ESR4-DL-BO is a QSFP fiber optic transceiver module designed for high-speed links up to 40 Mbit/s over multimode fiber. Operating at an 850 nm wavelength and using an MTP/MPO connector, the module supports 40 Gigabit Ethernet interfaces and is intended for short-reach connections up to 300 m. With a lightweight design (approx. 40 g) and a mean time between failures (MTBF) of 1,000,000 hours, this transceiver is suitable for installation in compatible networking hardware that follows QSFP MSA specifications.

Advantages

The module provides a compact QSFP form factor with MPO/MTP connectivity for dense fiber cabling, supporting simultaneous transmit and receive operation on multimode fiber at 850 nm. Compliance with MSA-aligned QSFP specifications ensures mechanical and electrical interoperability with supporting equipment. A high MTBF statistic indicates extended operational lifetime, while the modest weight simplifies handling and installation in switches, routers, or media conversion systems.

Suitable for

• Short-reach 40 Gigabit Ethernet links over multimode fiber
• Interconnects between QSFP-capable switches and routers within racks or between nearby racks (up to 300 m)
• High-density optical deployments using MTP/MPO trunking and patch panels

Key specifications

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

How to use

Install the BlueOptics QSFP-40G-ESR4-DL-BO by inserting the QSFP module into a compatible QSFP port on supported networking equipment, ensuring the host device supports the QSFP MSA form factor and associated 40 Gigabit Ethernet protocols. Connect an appropriate MTP/MPO multimode fiber patch cord between the module and the remote transceiver or patch panel. Verify link status via the host device and, if available, enable Digital Diagnostic Monitoring (DDM/DOM) on the host to monitor parameters such as optical power and temperature. Follow the host vendor’s hot-plug and handling guidelines to avoid electrostatic or mechanical damage during installation.

Recommendations

Use multimode fiber cabling rated for short-reach 40G operation and high-quality MTP/MPO connectors to achieve the specified 300 m reach. Confirm host device compatibility with QSFP modules and check whether DDM/DOM is supported if remote diagnostics are required. Handle the transceiver with ESD protection and store unused units in protective packaging to maintain connector cleanliness and performance.