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

The BlueOptics QSFP-40G-ESR4-CI-BO is a QSFP fiber optic transceiver module designed for 40 Mbit/s high-speed optical links. Operating at an 850 nm wavelength with an MPO/MTP connector for multimode fiber, this compact module supports transmission distances up to 300 m and has an MTBF of 1,000,000 hours. Weighing 40 g, it is intended for use in network equipment that accepts QSFP form-factor modules and 40 Gigabit Ethernet interfaces.

Advantages

This transceiver offers standardized QSFP connectivity and MSA-compliant mechanical and electrical specifications, enabling interoperability with compatible hardware that supports the same 40GBASE-ESR4 optical profile. The module supports simultaneous send and receive operation over multimode fiber via an MPO/MTP connector and includes diagnostic monitoring functionality when supported by host hardware. Low weight and compact QSFP packaging simplify installation and replacement in switches, routers and other network platforms.

Suitable for

• 40 Gigabit Ethernet links in data centers and enterprise networks
• Short-reach multimode fiber connections up to 300 m
• High-density switch and router ports requiring QSFP modules
• Environments that use MPO/MTP fiber cabling 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 form factor)
• Fiber optic connector: MPO/MTP
• Mean time between failures (MTBF): 1,000,000 hours
• Weight: 0.04 kg

How to use

Install the BlueOptics QSFP-40G-ESR4-CI-BO into a compatible QSFP slot in your switch, router or transceiver-capable device, ensuring the host platform supports the 40GBASE-ESR4 optical profile. Connect an MPO/MTP multimode fiber patch cord from the module to the corresponding port or patch panel. If the host hardware supports digital diagnostic monitoring (DDM/DOM), enable or query that interface to monitor supply voltage, optical power and temperature in real time. Always follow the host device manufacturer’s procedures for hot-plugging and handling optical transceivers to avoid damage.

Recommendations

For reliable performance, use multimode fiber infrastructure rated for 850 nm operation and MPO/MTP connectivity, verify host compatibility with the QSFP 40G profile before deployment, and perform end-to-end testing after installation. Keep transceiver dust caps on until connection and handle the module by its housing to avoid contamination of optical interfaces.