Arista Compatible QSFP-40G-PLR4 – 40GBASE-PLR4 QSFP+ 4x10G, 1310nm, 10km, DOM, SMF MPO/MTP

Discover a high-performance, cost-effective upgrade for data center networks with the Arista Compatible QSFP-40G-PLR4. This 40GBASE-PLR4 QSFP+ transceiver delivers four 10G lanes over single-mode fiber, leveraging 1310 nm laser technology to achieve reliable, long-reach connectivity up to 10 kilometers. Engineered to be functionally identical to the OEM PLR4 module, it is designed for plug-and-play deployment, ensuring seamless compatibility with Arista switches and other devices that support PLR4 / 40GBASE-PLR4. With Digital Optical Monitoring (DOM) support, you can monitor key link health and performance in real time, making this module a trusted choice for data centers, university campuses, and enterprise networks seeking robust, high-density 40G uplinks. The MPO/MTP interface supports dense fiber layouts, enabling scalable, future-proof upgrades without the vendor lock-in common with proprietary modules. Whether you are refreshing aging infrastructure, expanding capacity for growth, or standardizing on a uniform 40G platform, this module blends reliability, efficiency, and flexibility to help you optimize your network backbone.

• Seamless compatibility and performance: Functionally identical to Arista’s official PLR4 transceiver, this QSFP-40G-PLR4 supports 40GBASE-PLR4 with four independent 10G lanes, delivering consistent throughput, low latency, and reliable operation across supported Arista switches and compatible devices. It’s designed for real-world data-center traffic, including virtualization, cloud applications, and high-throughput inter-switch links, ensuring you get the performance you need without vendor-specific constraints.
• Long-reach, high-density fiber solution: The 1310 nm optical technology and single-mode fiber (SMF) capability extend up to 10 kilometers, enabling efficient uplinks between racks, between data centers, or across campus networks. The PLR4 interface consolidates four 10G links into a single QSFP+ transceiver, maximizing port density and simplifying cable management in crowded data center environments.
• Digital Optical Monitoring (DOM) and test-ready reliability: With DOM support, network administrators can monitor optical power, temperature, and signal integrity in real time. This visibility helps optimize link budgets, predict maintenance needs, and reduce unexpected downtime. Built to exacting industry standards, the module delivers dependable performance in mission-critical applications while resisting typical environmental stresses.
• MPO/MTP fiber interface for modern data centers: The MPO/MTP connector supports high-density fiber deployments, enabling streamlined cable runs and scalable layouts. This design is ideal for data centers using fiber trunking, mezzanine cabling, and cross-connect systems that require quick, reliable fiber connections with minimal insertion loss.
• Plug-and-play, cost-effective upgrade: By delivering Arista-compatible PLR4 functionality at a competitive price, this module reduces total cost of ownership without compromising performance. It’s an excellent choice for replacing aging OEM parts, standardizing a fleet of uplinks, or expanding PLR4 capacity across a growing network—while keeping integration friction to a minimum.

Technical Details of Arista Compatible QSFP-40G-PLR4

• Get this information from the "specifications" section of the product from https://ec.synnex.com/ using product "UPC" or "SKU" as reference

How to Install Arista Compatible QSFP-40G-PLR4

• Power down compatible network equipment before installation to prevent ESD and damage. Gather the proper fiber cables with MPO/MTP connectors and confirm the fiber type (SMF) and required reach (up to 10 km).
• Remove the existing transceiver (if applicable) following your device’s maintenance procedures. Handle the QSFP-40G-PLR4 module by its body, avoiding contact with the optical connectors and gold-plated contacts.
• Align the QSFP-40G-PLR4 module with the port and firmly insert it until it is fully seated. Ensure there is no excessive force, and confirm the module click or latch engages as designed on your switch or router.
• Connect the MPO/MTP fiber assembly to the module’s optical interface, making sure the polarity and lane mapping align with your network design. Secure cables to prevent movement or stress on connectors and maintain proper bend radius.
• Power up the device and verify link status, SFP/PLR4 indicator LEDs, and optical performance. If DOM is supported, monitor real-time parameters to confirm healthy operation and validate the expected latency and throughput for your PLR4 links.

Frequently Asked Questions

• Q: Is this Arista Compatible QSFP-40G-PLR4 truly plug-and-play with Arista switches?
• A: Yes. It is designed to be functionally identical to the Arista 40G-PLR4 QSFP+ module, enabling seamless insertion into supported Arista devices and other PLR4-capable switches with minimal configuration.
• Q: What type of fiber and reach does this module support?
• A: It supports Single-Mode Fiber (SMF) with a 1310 nm laser and a reach of up to 10 kilometers, making it suitable for intra-data center links, campus backbones, and longer inter-building connections where high-density 40G uplinks are required.
• Q: Does this module include Digital Optical Monitoring (DOM)?
• A: Yes. DOM provides real-time visibility into optical power, temperature, and other link health metrics to help you monitor performance and predict maintenance needs.
• Q: What is the connector interface?
• A: The module uses an MPO/MTP fiber interface designed for high-density deployments, compatible with modern data center cabling schemes and trunking systems.
• Q: Can I use this module as a direct replacement for OEM PLR4 transceivers?
• A: In most PLR4 deployments, yes. It is intended to be compatible and interoperable with PLR4-enabled networks, offering a cost-effective alternative while preserving performance and reliability.