Ubiquiti UACC-OM-SFP28-LR 25G Single-Mode Optical Module
Overview
The UACC-OM-SFP28-LR is a 25 Gbps single-mode optical transceiver designed to extend fiber connectivity across enterprise network infrastructure. This SFP28-form-factor module (often searched as UACC OM SFP28 LR) operates at 1310 nm wavelength and supports data rates of 1, 10, and 25 Gbps over single-mode fiber, making it suitable for long-distance backbone links where electrical copper would introduce latency or require repeaters. The module delivers 25 Gbps at distances up to 10 km (6.2 miles) — far beyond what standard OM3/OM4 multimode fiber provides — and draws only 1.3 W maximum, so it won't stress your power budget on modular switching platforms.
Key Features
- 25 Gbps Throughput: Delivers full line-rate performance, so you won't bottleneck high-bandwidth connections between data centers, core switches, or storage arrays. Supports backward compatibility with 1 Gbps and 10 Gbps devices on the same fiber plant if needed during migration.
- Single-Mode Fiber at 1310 nm: The 1310 nm wavelength is a standard telecom band that minimizes dispersion and attenuation over long distances. This is why single-mode fiber reaches 10 km reliably — multimode fiber tops out around 300 m at this speed.
- 10 km (6.2 miles) Effective Range: Eliminates the need for active repeaters or intermediate equipment on long runs, reducing cost and failure points. Critical for campus networks, warehouse automation systems spanning multiple buildings, or data center interconnects.
- SFP28 Form Factor: Plugs directly into any SFP28 port on Ubiquiti switching and gateway infrastructure — no additional adapters or modules needed. Future-proof your existing chassis if it already has SFP28 capability.
- LC UPC Duplex Connector: Industry-standard connector type ensures compatibility with commercial fiber cabling and patch panels. UPC (Ultra Physical Contact) connectors minimize back-reflection, important for signal integrity at 25 Gbps.
- Class 1 Laser Safety Certification: Complies with IEC/EN 60825-1:2014 laser safety standards. No special handling or licensing required, but do not look into the fiber connector end while powered — standard best practice for any optical module.
- Operating Temperature 0–70°C (32–158°F): Suitable for typical indoor data center and office environments. If your deployment includes outdoor telecom cabinets or uncontrolled spaces, verify ambient conditions stay within this range or consider shielded housing.
Integration & Compatibility
The UACC-OM-SFP28-LR integrates with any Ubiquiti UniFi switching or gateway platform equipped with SFP28 ports. Installation is straightforward: insert the module into an available SFP28 port, connect single-mode fiber with LC UPC connectors to both ends, and configure the link speed in the switch management interface (most modern platforms auto-negotiate to 25 Gbps). No firmware updates or special drivers are required — the module operates as a passive optical interface once installed.
What's in the Box
- 1x UACC-OM-SFP28-LR optical module
Frequently Asked Questions
Q: Can I use the UACC-OM-SFP28-LR with multimode fiber?
A: No. This module is designed for single-mode fiber only. Multimode fiber will not support the 10 km reach or 25 Gbps performance. Single-mode fiber is thinner, has a smaller core (typically 9 μm), and allows only one light path, which is why it achieves longer distances.
Q: What happens if I connect this module to a switch port that doesn't support 25 Gbps?
A: The module supports backward compatibility with 1 Gbps and 10 Gbps devices. If your switch only has 10 Gbps SFP+ ports (not SFP28), this module will not physically fit — the connector types differ. Check your switch documentation to confirm SFP28 port availability.
Q: Do I need any special cabling or connectors?
A: Yes. You will need single-mode fiber cabling with LC UPC connectors on both ends. Most commercial telecom or data center fiber suppliers stock LC UPC single-mode jumpers and patch panels. Verify fiber certification (typically OM1 or OM2 single-mode) and that connectors are rated for 25 Gbps if pushing that speed.
Q: Is the UACC-OM-SFP28-LR hot-swappable?
A: Yes. SFP28 modules are designed to be inserted and removed without power-cycling the switch, though most administrators power down the port or link before swapping to avoid transient errors. Allow a few seconds for the module to initialize after insertion.
Q: What is the typical latency added by this module?
A: Optical transceivers introduce negligible latency — typically less than 1 microsecond. The fiber propagation delay at 10 km is approximately 50 microseconds, which dominates. This module is transparent to protocol stacks.
Q: Can I mix this module with other optical transceivers on the same switch?
A: Yes. If your switch has multiple SFP28 ports, you can install different transceiver types (e.g., OM5 multimode modules for shorter runs, single-mode for long haul) in different ports without conflict. Each port negotiates independently.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The UACC-OM-SFP28-LR is a straightforward choice if you need to bridge sites or buildings over 1–10 km of single-mode fiber without active equipment in between. The 25 Gbps throughput and low power consumption (1.3 W) make this module a practical fit for enterprise backbones and warehouse automation networks where long-distance uplinks are required.
Technical Highlights:
- 1310 nm Single-Mode Operation: This wavelength and fiber type eliminate multimode dispersion entirely, enabling reliable 25 Gbps data rates at 10 km — something you cannot achieve with OM3 or OM4 multimode fiber, which max out around 300 m at this speed. The math is simple: longer distances demand single-mode.
- 10 km Reach Without Repeaters: If your current copper backbone or short-range optical links require intermediate switches or signal regeneration, replacing them with single-mode fiber and the UACC-OM-SFP28-LR eliminates those middlemen and reduces operational overhead by one device per link.
- 1.3 W Power Budget: Modular Ubiquiti switches distribute power across multiple optics. At 1.3 W, this module leaves headroom for other modules on the same chassis — a real advantage over older 10G single-mode transceivers that drew 2–3 W.
Deployment Considerations:
- Fiber Plant Dependency: You must have single-mode fiber already installed or planned. If your existing runs are multimode, retrofitting them for single-mode is a separate, sometimes costly project. Verify with your cabling contractor before committing.
- Temperature Constraints: The 0–70°C operating range is standard for indoor infrastructure. Outdoor telecom cabinets or shipping containers in extreme climates may fall outside this window. If you need extended range, confirm your cabinet or housing maintains this temperature envelope year-round.
- LC UPC Connector Maintenance: Fiber connectors are sensitive to dirt and dust. If your installation includes frequent module swaps, use dust caps religiously — even a speck of dust can degrade signal. Buy spares and train your team on clean-connector discipline.
Best fit: multi-building campus networks, data center-to-data center links over single-mode fiber, or warehouse automation systems where backbone reliability and zero intermediate equipment are priorities. Not suitable for short runs (under 300 m) where OM4 multimode is cheaper and simpler, or for outdoor long-haul routes where licensed telecom carriers typically handle the optics.
