Description
The AddOn QSFP28-128GB-SR4-AO is a high-performance, MSA and TAA compliant multi-rate optical transceiver designed for 100GBase Ethernet, OTU-4, and 128G Fibre Channel applications. Operating over multi-mode fiber (MMF), it delivers reliable data transmission up to 70 m on OM3 or 100 m on OM4 at a wavelength of 850 nm using an MPO connector. Featuring support for aggregate bit rates of 103.1 Gbps and 112.2 Gbps, this hot-pluggable QSFP28 module integrates digital optical monitoring (DOM) for real-time performance insights and ensures seamless interoperability with OEM equipment. With power dissipation under 3.5 W, a 3.3 V power supply, and operating temperatures from 0 °C to 70 °C, it is ideal for high-bandwidth data center, enterprise, and access network environments.
| Parameter | Specification |
|---|---|
| SKU | QSFP28-128GB-SR4-AO |
| Form Factor | QSFP28 |
| Data Rate | 103.1 Gbps (default), 112.2 Gbps (rate selectable) |
| Supported Standards | 100GBase Ethernet, OTU-4, 128G Fibre Channel |
| Wavelength | 850 nm |
| Fiber Type | Multi-Mode Fiber (MMF) |
| Transmission Distance | Up to 70 m (OM3), 100 m (OM4) |
| Connector | MPO |
| Digital Diagnostics (DOM) | Supported |
| Power Supply | 3.3 V |
| Power Consumption | < 3.5 W |
| Operating Temperature | 0 °C to +70 °C |
| Compliance | MSA, TAA, RoHS6, FDA Class 1, IEC60825-1 |
| Bit Rate per Lane | 25.78 Gbps (Ethernet), up to 28.05 Gbps (OTU-4/FC) |
| Average Launch Power (per lane) | -8.4 dBm to 2.4 dBm |
| Receiver Sensitivity (per lane) | -10.3 dBm to 2.4 dBm |
| Extinction Ratio | ≥ 3 dB |
| Interface | I²C with DOM support |
| Hot-Pluggable | Yes |
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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
