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

The BlueOptics QSFP-40G-ESR4-AT-BO is a compact QSFP optical transceiver module designed for 40 Mbit/s multimode fiber links. It transmits and receives at an 850 nm wavelength, uses an MPO/MTP connector for parallel fiber interfaces and supports multimode distances up to 300 m. With a lightweight housing of approximately 40 g and a rated MTBF of 1,000,000 hours, the module is intended for deployment in high-density network equipment that accepts QSFP form-factor optics.

Advantages

The module follows MSA QSFP mechanical and electrical specifications to ensure interoperability with compatible hardware platforms. It provides bidirectional 850 nm optical transmission over multimode fiber using an MPO/MTP connector, enabling parallel 40 Gigabit Ethernet links. The transceiver includes support for digital diagnostic monitoring (DDM/DOM) when the host hardware supports that interface, and is built with components selected for long operational lifetime and compliance with common industrial standards such as CE and RoHS.

Suitable for

• 40 Gigabit Ethernet multimode fiber links up to 300 m
• High-density switch and router QSFP ports
• Data center aggregation and server uplinks
• Storage systems and SAN interconnects that accept QSFP optics

Key specifications

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

How to use

Install the transceiver into a compatible QSFP port on your switch, router or storage appliance following the host vendor’s hot-swap and anti-static procedures. Connect an MPO/MTP multimode fiber patch cable between this transceiver and the corresponding MPO/MTP connector on the remote transceiver or patch panel. Verify link status and speed through the host device management interface. If DDM/DOM features are required, confirm that the host hardware supports and exposes digital diagnostics to monitor voltage, temperature, transmit/receive power and laser bias current.

Recommendations

Use high-quality multimode MPO/MTP patch cords and ensure fiber end-face cleanliness to achieve the specified range and optical performance. Match cable type (OM3/OM4) and patching infrastructure to your required distance and loss budget. When replacing or upgrading optics, consult the host vendor’s compatibility documentation and, if available, request a sample to validate interoperability in your environment.