40G QSFP SR4 transceiver BlueOptics 40G-QSFP-SR4 40000 Mbit/s 850 nm

The BlueOptics 40G-QSFP-SR4 is a fiber optic transceiver module designed for short-reach, high-speed links in data center and enterprise networking environments. Supporting a 40 Gbit/s aggregate data rate and operating at an 850 nm wavelength, this QSFP SR4 module provides four parallel lanes for multi-mode fiber connections and is intended for use in switches, routers and servers that accept QSFP form-factor optics.

Advantages

This transceiver delivers 40 Gbit/s performance with a compact QSFP package suited for dense installations. Using 850 nm optics and SR4 parallel transmission, it supports reliable short-distance links over multi-mode fiber while maintaining low power consumption and predictable thermal characteristics. The module’s standard QSFP interface ensures compatibility with equipment that supports QSFP optics and simplifies upgrades to higher port densities.

Suitable for

• 40 Gbit/s uplinks between switches in data centers
• High-performance server interconnects within racks
• Short-range fiber aggregation and distribution links over multi-mode fiber
• Network equipment requiring QSFP SR4 form-factor optics

Key specifications

• Form factor: QSFP (Quad Small Form-factor Pluggable)
• Data rate: up to 40 Gbit/s aggregate
• Wavelength: 850 nm
• Transmission type: SR4 parallel multimode fiber
• Typical reach: short-reach links over multimode fiber (dependent on fiber type and channel conditions)
• Compatibility: designed for QSFP ports in networking equipment

How to use

Install the transceiver into a compatible QSFP port following the equipment manufacturer’s hot-plug guidelines. Connect appropriate multi-mode fiber cables with the correct MPO/MTP connectors for SR4 parallel lanes, ensuring proper fiber polarity and connector cleanliness. Verify link status and speed on the host device management interface and monitor for any alarms or signal degradation. For safety, handle the optical interfaces with dust caps when not in use and avoid touching the fiber endfaces.

Recommendations

Use high-quality OM3 or OM4 multimode fiber and factory-terminated MPO/MTP trunk cables to achieve expected short-reach performance. Ensure firmware and compatibility lists on switches or servers are checked before deployment to confirm interoperability with QSFP SR4 optics.