StarTech.com MSA Uncoded QSFP+ Module - 40GBASE-SR4 - 40GE Gigabit Ethernet QSFP+ 40GbE Multi Mode Fiber (MMF) Optic Transceiver 100m DDM

The StarTech.com MSA Uncoded QSFP+ Module - 40GBASE-SR4 is the go-to solution for high-speed networking that demands reliable 40 Gigabit Ethernet connectivity over multi-mode fiber. Designed to plug into compatible MSA switches and routers, this uncoded QSFP+ transceiver delivers four parallel 10 Gbps channels to achieve 40GbE performance over short- and medium-range MMF links. It’s engineered for data centers, server rooms, and enterprise networks where density, efficiency, and straightforward interoperability matter. With Digital Diagnostics Monitoring (DDM) built in, you can monitor real-time optical performance and quickly identify issues before they impact critical workloads. This module is a versatile choice for organizations seeking a standardized, hot-swappable solution that minimizes compatibility concerns while maximizing throughput across multi-mode fiber cabling.

• High-speed 40GBASE-SR4 over multi-mode fiber: Four parallel 10 Gbps lanes enable 40 Gbps aggregate data rate over short to medium MMF links, making it ideal for rack-to-rack or data center interconnects within a single facility.
• MSA uncoded compatibility: Engineered to work with a broad range of QSFP+ ports and fiber networks that adhere to the MSA standard, reducing vendor lock-in and simplifying cross-vendor deployments.
• Quad-channel efficiency on MMF: The SR4 specification uses four 850 nm channels to transmit and receive simultaneously, delivering robust performance with widely supported OM3/OM4 fiber cabling.
• Digital Diagnostics Monitoring (DDM): Built-in monitoring of critical optical parameters (such as temperature, laser bias current, supply voltage, and optical power) for proactive maintenance and rapid troubleshooting.
• Easy integration and reliability: Hot-swappable QSFP+ form factor, compatible with standard 40G ports, and designed for use with multi-mode fiber cabling up to the recommended distances, ensuring straightforward deployment in existing networks.

Technical Details of StarTech.com MSA Uncoded QSFP+ Module - 40GBASE-SR4

• Interface: QSFP+ transceiver module for 40GBASE-SR4 networking
• Fiber Type: Multi-Mode Fiber (MMF)
• Data Rate: 40 Gbps total, utilizing four parallel 10 Gbps lanes
• Wavelength: 850 nm (VCSEL-based signaling typical for MMF SR4)
• Distance: Up to 100 meters on OM3/OM4 MMF cabling, suitable for data centers and LANs
• Connector: MPO/MTP interface for MMF backbone cabling; transceiver connects to QSFP+ ports
• Diagnostics: Digital Diagnostics Monitoring (DDM) for real-time health and performance metrics
• Compatibility: MSA uncoded design to maximize interoperability with a wide range of switches and routers
• Form Factor: Hot-swappable QSFP+ module that fits standard QSFP+ slots
• Power and Temperature: Designed to integrate with standard data-center power and cooling environments, supporting typical commercial deployments

How to install StarTech.com MSA Uncoded QSFP+ Module

To install the StarTech.com MSA Uncoded QSFP+ Module, first verify that your networking device supports 40GBASE-SR4 QSFP+ modules and that you have the appropriate MMF cabling with MPO/MTP connectors. Ensure your system is powered down or that the port supports hot-swap installation before proceeding. Carefully align the QSFP+ module with the corresponding slot in the switch or router and insert it until it seats firmly with a click. Attach the MMF fiber trunk to the MPO/MTP connector, ensuring the fiber is clean and free of excessive bends. Maintain correct MPO polarity and fiber pairing to preserve transmit and receive channels. Once inserted and fiber connected, power on the device or resume operation if hot-swapping is supported. After the link comes up, consult the device’s status indicators and DDMon readouts to confirm the link is active and performing within expected parameters. If available, check the port’s LED indicators and the switch’s management console to verify 40G link status, speed, and any alarm conditions. Regularly monitor the DDM data to detect drift in optical power or temperature that could affect link reliability.

For best results, use high-quality OM3 or OM4 MMF cabling designed for 850 nm SR4 operation. Avoid sharp bends, excessive tension, or contaminated connectors, and keep MPO/MTP connectors clean with approved fiber cleaning supplies. If you need to scale or upgrade, StarTech.com’s uncoded module remains compatible with a broad ecosystem of 40G switches and routers, allowing you to mix vendors with confidence while maintaining the performance and simplicity you expect from 40GBASE-SR4 networking.

Frequently asked questions

• What is 40GBASE-SR4? 40GBASE-SR4 is a short-range 40 Gbps optical specification that uses four parallel 10 Gbps lanes over multi-mode fiber, typically operating at 850 nm, and commonly deployed with MPO/MTP connectors for high-density data-center environments.
• Is this module hot-swappable? Yes. The StarTech.com MSA Uncoded QSFP+ Module is designed for hot-swappable insertion into compatible QSFP+ ports, allowing downtime-free upgrades in many standard server and switch platforms.
• What type of fiber is required? This module operates over Multi-Mode Fiber (MMF), usually OM3 or OM4, and uses an MPO/MTP trunk for the four 10 Gbps channels. Ensure the fiber meets the MTBF and loss specifications recommended by your devices.
• What does DDM provide? Digital Diagnostics Monitoring (DDM) delivers real-time data on optical power, temperature, bias current, supply voltage, and other critical parameters, enabling proactive maintenance and faster troubleshooting.
• Will this module work with all 40G switches? The uncoded QSFP+ design maximizes compatibility with a wide range of SFP+/QSFP+ ports that adhere to the MSA standard. Always verify vendor compatibility and recommended fiber specifications for your specific hardware.