HPE LC LR4 SM Transceiver — 40GBASE-LR4 QSFP+ for High-Performance Data Center Links

The HPE LC LR4 SM Transceiver is engineered to elevate optical networking with robust, reliable 40G performance over single‑mode fiber. This high‑tech QSFP+ module is designed to slot into Hewlett Packard Enterprise networking gear and other compliant platforms, delivering four parallel 10 Gbps lanes that aggregate to a full 40 Gbps link. Ideal for data center interconnects, campus backbones, and long‑haul connections between core switches, the LR4 transceiver combines industry‑standard form factors with precise laser technology to ensure consistent signal integrity across multi‑kilometer spans. With LC duplex fiber connectors and a compact, hot‑swap ready design, it provides a straightforward upgrade path for networks migrating from 10G to 40G and beyond, while preserving existing fiber infrastructure. Built to operate in demanding data center environments, the HPE LC LR4 SM Transceiver emphasizes reliability, efficiency, and ease of deployment, making it a trusted choice for organizations pursuing resilient, scalable connectivity.

• 40GBASE-LR4 performance: Supports four 10 Gbps lanes that are multiplexed to deliver a single 40 Gbps link, enabling high‑density, high‑speed connections between switches and routers in data center and campus networks.
• Long‑reach single‑mode operation: Optimized for single‑mode fiber, delivering dependable performance across extended distances—up to 10 kilometers—while maintaining signal integrity across the link.
• LC duplex fiber connectors: Uses standard LC duplex connectors on the optical fiber side, simplifying integration into existing SMF deployments and reducing cabling complexity.
• QSFP+ form factor with hot-swappable design: Fits into compatible QSFP+ ports on network devices and is designed for hot-swapping, enabling maintenance with minimal downtime when used in properly configured environments.
• Wavelengths and interoperability: Employs a 1310 nm‑based LR4 wavelength set, compatible with a wide range of 40G platforms and network architectures that support LR4 operation over SMF.

Technical Details of HPE LC LR4 SM Transceiver

Exact specifications are typically listed by the distributor using the product's UPC or SKU. Below are generalized technical details common to HPE LR4 QSFP+ transceivers. For precise values, refer to the distributor's spec sheet associated with your SKU (for example, via https://ec.synnex.com/).

• Form factor: QSFP+ hot‑swappable transceiver module
• Interface standard: 40GBASE-LR4
• Data rate: Aggregate 40 Gbps (four 10 Gbps lanes)
• Fiber type: Single‑mode optical fiber (SMF)
• Connectors: LC duplex on the fiber side
• Reach: Up to 10 kilometers on standard SMF (OS2/G.652 compliant fiber)
• Wavelengths: 1310 nm channel set for LR4 operation
• Operating temperature: Typically defined by vendor specs; suitable for data center environments with standard commercial ranges
• Power consumption: Vendor‑specific; refer to the official datasheet for exact values
• Compliance: IEEE 802.3 40GBASE-LR4 compatibility; QSFP+ MSA compliant

How to install HPE LC LR4 SM Transceiver

Installing the HPE LC LR4 SM Transceiver is a straightforward process on compatible switches, routers, and line cards. Follow these general steps to ensure a successful deployment:

1) Confirm Compatibility: Ensure your device supports 40GBASE-LR4 on QSFP+ ports and that the firmware or operating system supports the transceiver model. Check vendor compatibility matrices if needed.

2) Prepare the Port: If your environment requires, power down the device or place it into maintenance mode. Many modern systems support hot-swapping, but always follow your equipment’s maintenance procedures.

3) Remove the Existing Module (if applicable): Gently release the module by engaging the ejector latch and sliding it out from the port. Handle the module by its edges and avoid touching optical components.

4) Insert the LR4 Transceiver: Align the transceiver with the QSFP+ port, ensuring the keying features match. Slide the module in firmly until the latch engages and seats securely.

5) Attach Fiber Cables: Connect two LC duplex fiber cables to the LC connectors on the transceiver, observing correct transmit/receive polarity and ensuring clean, properly terminated fiber ends. Route cables to avoid excessive tension or bending.

6) Verify Link Establishment: Power on the device (or resume operation) and check the port status indicators or management interface. A solid link LED typically confirms a healthy 40G connection. Run a basic link test or loopback to confirm performance if required by your network policies.

7) Monitor and Validate: Use the network management system to verify bandwidth, error rates, and error counters. Confirm that the four 10 Gbps lanes are aggregating correctly into the 40 Gbps link and that the channel order aligns with the network design. If you employ DWDM in your environment, validate channel spacing and dispersion settings as part of your initial validation suite.

Frequently asked questions

• What is the primary use case for the HPE LC LR4 SM Transceiver? It is designed to provide a high‑density, long‑reach 40G interconnect over single‑mode fiber, suitable for data center core/backbone links, campus interconnects, and inter‑site connectivity where 40G performance is required.
• What fiber type and connectors are required? You’ll need single‑mode fiber (commonly OS2) with LC duplex connectors on the fiber side. Ensure fiber ends are properly terminated and that you maintain appropriate loss budgets for your link.
• What is the maximum distance I can reach with this transceiver? The LR4 configuration supports up to about 10 kilometers on standard SMF, though actual reach depends on fiber quality, connector quality, and the network design (including any dispersion management).
• Is the transceiver hot-swappable? Yes. The QSFP+ LR4 transceiver is designed for hot-swapping in compatible network devices, enabling maintenance with minimal downtime when performed per vendor guidelines.
• How do I verify compatibility with my device? Check your hardware vendor’s compatibility matrix for the exact model, firmware/OS version, and supported transceiver list. If needed, contact the vendor's support team with your SKU/UPC to confirm suitability.
• Can this transceiver be used with DWDM or other advanced optical networks? LR4 transceivers are designed for 40G LR4 operation over SMF. In DWDM deployments, ensure the network design accounts for wavelength management, channel spacing, and compatibility with your DWDM platform.