StarTech.com HPE JG709A Compatible QSFP+ Module – 40GBASE-SR4

The StarTech.com HPE JG709A Compatible QSFP+ Module is a high-performance 40 Gigabit Ethernet transceiver designed to deliver robust, scalable fiber connectivity for data centers, enterprise networks, and HPC environments. Built to align with the HPE JG709A specification, this QSFP+ 40GBASE-SR4 transceiver is engineered to provide seamless, plug-and-play operation in compatible switches and servers, enabling fast, reliable links across multi-mode fiber. The module is ideal for customers seeking a cost-effective, standards-compliant solution that reduces network bottlenecks while preserving performance integrity across high-density deployments.

• Efficient 40GBASE-SR4 QSFP+ technology: This transceiver channels four 10 Gbps lanes in parallel, delivering an aggregate data rate of 40 Gbps over multi-mode fiber. It is purpose-built for short-reach, high-bandwidth intra-data center applications, such as rack-to-rack and rack-to-switch connectivity, where low latency and high throughput are critical. The SR4 format supports dense port counts in single cabinets, enabling scalable, future-ready networks that can handle growing workloads, virtualization, and cloud services without sacrificing performance. Whether you're consolidating servers, speeding up storage traffic, or powering virtualization clusters, this module brings dependable 40G capabilities to your existing infrastructure.
• Multi-mode fiber compatibility with OM3/OM4 fiber and 300 m reach: The 850 nm VCSEL-based optics in this QSFP+ module are optimized for multi-mode fiber, supporting OM3 and OM4 cabling. This makes it an excellent fit for data centers where short-reach installations are common, including campus backbones and intra-ratified fiber layouts. With support for distances up to 300 meters on appropriate MMF, you gain flexibility to design efficient, high-density networks without the need for additional re-cabling or fiber upgrades. The ability to work over prevalent MMF standards simplifies deployment and reduces total cost of ownership while delivering consistent performance across links.
• HPE JG709A compatibility for plug-and-play deployment: Engineered to be compatible with HPE environments and configurations that rely on JG709A-compatible modules, this transceiver offers a familiar, seamless integration experience. The compatibility promotes straightforward interchangeability with HPE hardware ecosystems, minimizing compatibility concerns and ensuring stable operation across supported switches and servers. This means you can upgrade or replace existing components with confidence, maintaining network performance, link integrity, and service continuity without complex configuration or vendor lock-in.
• Durability, reliability, and ease of maintenance: The module is designed for continuous operation in data center conditions, with robust environmental specs and a compact QSFP+ form factor that supports hot-swapping in compatible chassis. It is built to withstand typical data center temperatures and conditions while delivering stable optical performance. Digital Optical Monitoring (DOM) support allows for real-time visibility into transmitter and receiver health, enabling proactive maintenance and rapid problem diagnosis. The transceiver is a solid choice for enterprises aiming to reduce downtime, shorten mean time to repair, and maintain high levels of service quality for critical workloads.
• Plug-and-play deployment with industry-standard compliance: Compliant with IEEE 802.3ba 40GBASE-SR4, MSA standards for QSFP+ modules, and RoHS requirements, this transceiver fits naturally into modern data-center architectures without complicated configuration. The plug-and-play nature accelerates deployment—simply insert into a compatible QSFP+ port, connect fiber, and verify link status and throughput. For IT teams managing large-scale, multi-vendor environments, this compatibility supports faster rollouts, easier replacement cycles, and improved consistency across equipment from multiple manufacturers.

Technical Details of StarTech.com HPE JG709A Compatible QSFP+ Module

• Product type: QSFP+ transceiver module for 40G Ethernet
• Application: 40GBASE-SR4 multi-mode fiber optic link
• Data rate: 40 Gbps aggregated across four lanes (4 x 10 Gbps)
• Optical wavelength: 850 nm (VCSEL)
• Fiber type: Multi-mode fiber (MMF), compatible with OM3/OM4 cabling
• Distance: Up to 300 meters on appropriate MMF cables
• Connector: MPO/MTP 12-fiber optical interface on MMF side
• Form factor: QSFP+ transceiver module
• Compliance: IEEE 802.3ba 40GBASE-SR4, MSA-compliant, RoHS
• Digital Optical Monitoring (DOM): Supported for optical power and temperature monitoring
• Compatibility: HPE JG709A compatible module for seamless integration with related HPE hardware
• Operating temperature: Typical data-center range (0 to 70°C); consult product sheet for exact limits
• Power consumption: Typical 2.5 W, maximum around 3.5 W depending on link conditions
• Industriy support: Designed for high-density deployments in data centers, campuses, and enterprise networks

How to install StarTech.com HPE JG709A Compatible QSFP+ Module

• Power down or ensure your equipment supports hot-swapping: The QSFP+ form factor is designed for hot-swappable insertion in compatible switches and servers. If your hardware supports hot-swapping, you can replace or install the module without powering down the entire system; otherwise, follow standard shutdown procedures before installation.
• Prepare the fiber backbone: Use the appropriate multi-mode OM3 or OM4 fiber with an MPO/MTP connector. Verify that the fiber is clean and free of dust to maintain optimal optical performance. Inspect connectors for any scratches or damage before installation.
• Insert the transceiver into the QSFP+ port: Align the module with the port, gently but firmly seat it, and ensure it is fully seated. A secure click or lock may indicate successful installation, depending on chassis design. Do not apply excessive force, as misalignment can damage the module or port.
• Connect the optical fiber: Attach the MPO/MTP connector to the transceiver’s optical interface and connect the other end to the corresponding MMF port on the networking device. Make sure the fiber channels are correctly oriented to avoid crosstalk and ensure four active lanes for 40G operation.
• Verify link status and performance: Power on the devices and check the port status LEDs and management interface. Confirm that the 40G link is established, monitor link speed, and test data throughput to verify stable operation. If the link is not established, verify compatibility with the device’s firmware, confirm cable integrity, and review DOM data if available for diagnostic insight.

Frequently asked questions

• Q: What is the main purpose of the StarTech.com HPE JG709A Compatible QSFP+ Module? A: It provides 40GBASE-SR4 connectivity over MMF for high-speed intra-data center networks, enabling four 10 Gbps lanes to operate in parallel for a total of 40 Gbps, ideal for server-to-switch links and other high-bandwidth scenarios.
• Q: Is this module compatible with HPE switches and servers? A: Yes, it is designed to be compatible with HPE JG709A configurations and is intended to integrate smoothly into HPE environments that support QSFP+ 40GBASE-SR4 modules.
• Q: What fiber types can I use with this transceiver? A: This transceiver is optimized for multi-mode fiber, including OM3 and OM4 cabling, which supports up to 300 meters under the right conditions.
• Q: Does it support Digital Optical Monitoring (DOM)? A: Yes, the module supports DOM, allowing real-time visibility into transmitter and receiver metrics for proactive maintenance and diagnostics.
• Q: How do I install this module without causing downtime? A: Because it is a QSFP+ hot-swappable form factor, you can replace or install the module in compatible devices without powering down, provided your equipment supports hot-swapping. If you’re unsure, follow your vendor’s recommended procedures and consider performing the operation during a maintenance window.