StarTech.com Citrix 3013936-E2 Compatible QSFP+ Module — 40GBASE-SR4 MMF 100 m with DDM

The StarTech.com Citrix 3013936-E2 Compatible QSFP+ Module is a purpose-built, high-performance transceiver designed to elevate data-center connectivity for demanding 40 Gigabit Ethernet deployments. Engineered as a compatible solution for Citrix environments, this 40GBASE-SR4 QSFP+ module delivers reliable, scalable bandwidth over multi-mode fiber (MMF) with precise optical performance that data centers rely on for virtualization, cloud infrastructure, and big data workloads. Whether you’re upgrading an existing switch fabric or deploying a new 40G backbone, this module provides a seamless, drop-in upgrade path that minimizes downtime and maximizes return on investment.

Built for real-world data-center conditions, the 40GBASE-SR4 SR4 transceiver uses four parallel lanes at 850 nm to move large volumes of data across short-reach MMF links. With a maximum reach of 100 meters on compliant MMF fiber, it is an excellent fit for rack-to-rack or aisle-to-aisle connectivity in modern server rooms and top-of-rack configurations. The module’s compact form factor and robust enclosure ensure easy handling, hot-swappable insertion into compatible switches and line cards, and stable operation in temperature-controlled data-center environments. Administrators can count on consistent performance across a wide range of network equipment, enabling simplified interoperability and provisioning in mixed-vendor environments commonly found in Citrix-backed virtualization deployments.

One of the defining advantages of this CSFP+ module is its Digital Diagnostics Monitoring (DDM) capability. DDM provides real-time, granular visibility into critical optical parameters such as transmitter and receiver optical power, temperature, and other environmental data. With DDM, network teams can monitor link health, preemptively identify drift in performance, and rapidly troubleshoot potential issues before they affect application delivery. This proactive monitoring translates into higher up-time, lower mean time to repair (MTTR), and a smoother user experience for Citrix virtual desktops and applications that demand low latency and high throughput.

In terms of value, the StarTech.com Citrix 3013936-E2 Compatible QSFP+ Module offers a compelling combination of performance, reliability, and compatibility. It is designed to work across a broad ecosystem of 40G Ethernet switches and adapters, ensuring that IT teams aren’t locked into a single vendor. This flexibility is particularly valuable in Citrix environments, where high-speed interconnects between servers, storage networks, and core switching fabrics are essential to delivering responsive virtualized desktops and scalable cloud services. By pairing this module with appropriate MMF fiber, organizations can realize robust 40G performance with predictable latency characteristics, enabling faster VM migrations, improved live backup operations, and efficient data center consolidation.

• High-performance 40GBASE-SR4 over MMF — An optimized QSFP+ transceiver that delivers four parallel 10 Gbps lanes for robust 40 Gigabit Ethernet connectivity across multi-mode fiber, ideal for short-reach data-center networks and high-density server interconnects.
• Digital Diagnostics Monitoring (DDM) — Built-in monitoring that provides real-time visibility into transmitter power, receiver power, temperature, and other critical parameters, enabling proactive maintenance and faster troubleshooting.
• Citrix-ready compatibility with broad interoperability — Marketed as a compatible module for Citrix deployments, designed to integrate smoothly with a range of switches and servers used in virtualization and cloud infrastructure, reducing integration risks.
• Rigid, hot-swappable design — Compact QSFP+ form factor with a rugged housing supports hot-swapping in supported switches, enabling non-disruptive upgrades and scalable growth without full downtime.
• 100 m MMF reach with OM-friendly guidance — engineered for reliable operation up to 100 meters on compliant multi-mode fiber, making it suitable for typical data-center layouts that leverage OM3/OM4 fiber for performance and cost efficiency.

Technical Details of StarTech.com Citrix 3013936-E2 Compatible QSFP+ Module - 40GBASE-SR4 - 40GE Gigabit Ethernet QSFP+ MMF - 100 m DDM

• Interface/Form Factor: QSFP+ transceiver module designed for 40GBASE-SR4 applications.
• Data Rate: 40 Gbps (40GBASE-SR4), utilizing four parallel 10 Gbps lanes.
• Fiber Type: Multi-Mode Fiber (MMF).
• Reach: Up to 100 meters on compliant MMF fiber (often OM3/OM4, depending on installation specifics).
• Wavelength: 850 nm transceiver technology suitable for SR4 short-reach links.
• Diagnostics: Digital Diagnostics Monitoring (DDM) for ongoing optical parameter visibility.
• Compatibility: Citrix 3013936-E2 compatible with a broad range of 40G switches and network devices; designed to integrate with data-center infrastructures that require high-density 40G interconnects.
• Insertion/Connection: Hot-swappable transceiver; supports standard QSFP+ ports found on modern switches and routers.
• Mechanical/Environmental: Rugged metal housing with locking latch to ensure reliable seating and minimal likelihood of accidental removal; designed for data-center environmental conditions.
• Power and Thermal: Passive heat dissipation typical for QSFP+ modules with thermal considerations handled by chassis design and ambient data-center cooling.

How to install StarTech.com Citrix 3013936-E2 Compatible QSFP+ Module

• Power down the host device only if your environment requires a non-hot-swap procedure; many 40G QSFP+ interfaces support hot-swapping. Verify your switch or blade chassis supports hot-swapping for QSFP+ modules before installation.
• Open the appropriate port cover or access panel on your switch or chassis and align the QSFP+ module with the port. The module is keyed to fit only in the correct orientation, so insert straight and even with gentle pressure until the latch engages.
• Securely seat the module into the port until you hear or feel a click indicating a proper latch. Avoid forcing the module; if it does not seat readily, remove and reinsert to ensure correct alignment.
• Connect the MMF fiber cables to the MPO/MTP connectors on the transceiver or to the targeted switch ports, as dictated by your network topology. Ensure fiber polarity is correct and clean connectors before insertion to prevent signal loss.
• Power on the device (if required) and verify link status via the switch management interface. Use the DDM readouts to confirm optical power and temperature remain within expected ranges. Run a basic throughput test to confirm the path is delivering expected 40G performance and monitor for any error conditions that may indicate misalignment or fiber issues.

Frequently asked questions

• What is 40GBASE-SR4? 40GBASE-SR4 is a high-speed 40 Gbps Ethernet specification that uses four parallel 10 Gbps lanes over multi-mode fiber, designed for short-range links typically up to 100 meters on MMF with 850 nm transceivers.
• Is this module compatible with Citrix environments? Yes. The product is described as Citrix 3013936-E2 Compatible, and is intended to work within Citrix virtualization and cloud networking architectures alongside supported switches and adapters.
• What type of fiber should I use? Use compliant multi-mode fiber, such as OM3 or OM4, to achieve the stated reach and performance. Confirm fiber type and connector standards with your network equipment vendor.
• What is the maximum distance supported? Up to 100 meters on MMF for SR4 850 nm transmitters, depending on fiber quality, installation, and environmental conditions.
• Does this module support Digital Diagnostics Monitoring (DDM)? Yes. It includes DDM, which provides real-time monitoring of optical power levels, temperature, and other critical parameters to help maintain link health.