Description
The AddOn Arista Networks® Compatible TAA 100GBase-BX LR1 PAM4 QSFP28 Transceiver (Q28-100GP4-BXU2931-20-AR-AO) is a high-performance optical transceiver designed to deliver reliable 100Gbps connectivity over single-mode fiber (SMF) at distances up to 20km. Utilizing bidirectional single-lambda PAM4 modulation with wavelengths of 1291nm Tx / 1311nm Rx and an LC connector, this hot-swappable QSFP28 module ensures seamless integration with Arista Networks® equipment.
Engineered for data centers and high-speed Ethernet environments, it complies with QSFP28 MSA, SFF-8636 Rev 2.10a, and OIF CEI-28G-VSR electrical interface standards. The transceiver features digital optical monitoring (DOM) for real-time parameter tracking, supports a single 3.3V power supply, and operates in commercial temperature ranges (0°C to 70°C). It is also RoHS-compliant, lead-free, and TAA-compliant, ensuring adherence to global trade and environmental standards.
Each unit undergoes extensive testing — including programming, serialization, and traffic validation — to guarantee full compatibility and reliable performance identical to the OEM original. Backed by a limited lifetime warranty, this AddOn transceiver is a dependable solution for expanding high-speed network infrastructure with confidence.
| Specification | Details |
|---|---|
| Compatible OEM | Arista Networks® |
| Part Number | Q28-100GP4-BXU2931-20-AR-AO |
| Form Factor | QSFP28 |
| Data Rate | 100Gbps |
| Standard | 100GBase-BX LR1 PAM4 |
| Wavelength (Tx/Rx) | 1291nm Tx / 1311nm Rx |
| Transmission Distance | Up to 20 km |
| Fiber Type | Single-Mode Fiber (SMF) |
| Connector Type | LC Duplex (BiDi) |
| Modulation Format | PAM4 |
| Electrical Interface | 4x25G OIF CEI-28G-VSR |
| Power Supply Voltage | 3.3V |
| Power Dissipation | ≤ 4.5 W |
| Operating Temperature | 0°C to 70°C (Commercial) |
| Digital Optical Monitoring (DOM) | Supported |
| Compliance | QSFP28 MSA, SFF-8636 Rev 2.10a, RoHS, TAA |
| Applications | Data Centers, 100G Ethernet Networks |
| Warranty | Limited Lifetime Warranty |
Payment & Security
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
