Arista Compatible QSFP-40G-SR4-A: TAA-Compliant Functionally Identical 40GBASE-SR4 QSFP+ Transceiver

Discover a cost-effective, high-performance transceiver designed to deliver OEM-level reliability and interoperability within Arista environments. The Arista Compatible QSFP-40G-SR4-A from eNet Components is a 40GBASE-SR4 QSFP+ module engineered to be functionally identical to the OEM part while offering substantial savings. With an 850 nm VCSEL-based design, this transceiver supports 4 dedicated lanes for 40 GbE throughput over multimode fiber up to 150 meters, making it an ideal choice for data centers, campus networks, and large-scale server deployments. Built to be Arista-compatible and TAA-compliant, it pairs well with a wide range of Arista switches that support QSFP+ SR4 modules, delivering plug-and-play integration, robust performance, and predictable interoperability. Each unit is subjected to stringent testing to ensure it meets the performance expectations of enterprise networks without the premium price tag of brand-name OEM parts. The result is a dependable, field-tested solution that minimizes total cost of ownership while maintaining the high standards your network demands.

• Cost-effective, 100% compatible alternative: This transceiver is designed to function identically to the Arista QSFP-40G-SR4-A, delivering OEM-grade performance at a fraction of the price. It’s tested for interoperability in common Arista-based deployments, helping you reduce capex without compromising reliability or compatibility. In busy data centers where every watt of efficiency and every microsecond of latency matters, this module provides predictable behavior and stable operation across a wide range of switch platforms.
• 40GBASE-SR4 with four lanes over multimode fiber: Each of the four 10 Gbps lanes carried by the QSFP+ module enables parallel transmission across multimode fiber at 850 nm. The SR4 specification is optimized for short-reach links, typically within data centers, and supports up to 150 meters on OM3/OM4 fiber. This combination makes it ideal for high-density uplinks and server-to-switch connections, delivering high aggregate bandwidth with reliable link integrity.
• MPO/MTP connector for high-density deployments: The module uses a standard MPO/MTP interface, enabling clean, high-density fiber connections that minimize rack space and simplify cable management. MPO/MTP connectors are well-suited for data center environments where large numbers of channels must be aggregated efficiently, and they pair seamlessly with pre-terminated assemblies and trunk cables for fast, scalable installations.
• TAA compliant and vetted for enterprise use: Built to meet Trade Agreements Act (TAA) requirements, this transceiver is suitable for procurement in government and enterprise settings that require compliance with federal sourcing guidelines. The device’s architecture mirrors OEM functionality, ensuring you can confidently deploy it in production environments where compliance and reliability matter most.
• Plug-and-play with Arista ecosystems and reliable interoperability: The Arista-compatible design emphasizes seamless integration with Arista switches and routers that support QSFP+ SR4 optics. With compatibility validated across widely deployed Arista platforms, you can expect straightforward installation, consistent link performance, and reduced troubleshooting time when replacing or upgrading links within your fabric.

Technical Details of Arista Compatible QSFP-40G-SR4-A

• Form Factor: QSFP+
• Data Rate: 40 Gbps (4x10 Gbps lanes)
• Technology: 4-Lane SR4 over multimode fiber, 850 nm VCSEL-based parallel optics
• Distance: Up to 150 meters on OM3/OM4 multimode fiber
• Connector: MPO/MTP (12-fiber interface) supporting four parallel lanes
• Wavelength: 850 nm
• Fiber Type: Multimode (OM3/OM4 recommended for SR4 links)
• Compatibility: Arista-compatible; functionally identical to OEM QSFP-40G-SR4-A; tested for interoperability in common data-center environments
• Electrical Interface: QSFP+ hot-swappable form factor designed for easy insertion and removal
• Compliance: TAA compliant
• Manufacturer Notes: Part designed to mirror OEM performance and reliability while providing a cost-effective alternative
• Warranty and Support: Warranty terms and support align with the seller’s policy for compatible transceivers; refer to the purchase terms for specifics

How to install Arista Compatible QSFP-40G-SR4-A

• Power down the server or switch and disconnect any power sources before attempting installation to protect the module and the host hardware.
• Verify compatibility with your Arista device and confirm that the firmware on the switch supports QSFP+ SR4 transceivers. If needed, perform a firmware update prior to installation to ensure optimal interoperability.
• Remove the existing transceiver from the QSFP+ slot carefully, avoiding excessive force. Keep the slot clean and free of debris to prevent contamination that could affect optical performance.
• Align the Arista Compatible QSFP-40G-SR4-A module with the slot and gently insert it until it seats securely and the locking latches engage. Do not twist or force the module; improper seating can cause link failures.
• Connect the corresponding MPO/MTP fiber cables with the correct polarity and connectors. Ensure cables are properly terminated and routed to minimize bend radius and signaling loss.
• Power on the device and verify link status through the management interface. Check that all four lanes are recognized and that the aggregated 40G link comes up with stable throughput.
• Run a basic link test or loopback diagnostic if available to confirm data integrity and error-free transmission across all lanes. If issues arise, reseat the module and verify fiber connections.
• Document the installation for asset management and future maintenance. Include slot location, firmware versions, and the service window for reference in case troubleshooting is required later.

Frequently asked questions

• Q: Is this module truly Arista-compatible?
• A: Yes. It is designed to be functionally identical to the Arista QSFP-40G-SR4-A and is tested for interoperability within Arista-based environments. It provides OEM-like performance at a lower cost while maintaining compatibility with Arista switches that support QSFP+ SR4 optics.
• Q: What fiber type and cable are recommended?
• A: This SR4 transceiver operates over multimode fiber with an 850 nm wavelength and uses an MPO/MTP connector. For best results, use OM3 or OM4 multimode fiber with properly terminated MPO/MTP cables, and adhere to the recommended bend radius and patch panel practices in your data center.
• Q: Is the transceiver compliant with government procurement standards?
• A: Yes. The product is TAA compliant, making it suitable for government and enterprise procurement where compliance is required.
• Q: What should I do if the link does not come up after installation?
• A: Confirm correct seating of the module, verify fiber polarity and connector integrity, ensure fiber endpoints are clean, and check switch firmware compatibility. If problems persist, reseat the module and reboot the device, and consult vendor support documentation for troubleshooting steps.
• Q: What is the warranty or return policy for this transceiver?
• A: Warranty and return policies vary by seller and marketplace. Review the specific listing or contacting the vendor directly will provide the exact warranty duration, coverage, and return terms for this Arista-compatible SR4 transceiver.