ATEN 2A-137G 10km Single-Mode Fiber SFP Transceiver for KE8950/8952 KVM Extenders
Overview
The ATEN 2A-137G is a single-mode fiber SFP transceiver engineered specifically to extend the reach of ATEN's KE8950 and KE8952 KVM-over-IP extenders across distances up to 10,000 meters — roughly 6.2 miles. If your control room and managed endpoints are separated by campus-scale distances, a standard copper link won't get you there; this module slots directly into the SFP port on compatible ATEN extenders and hands off signal via 1310 nm single-mode fiber, keeping latency low and signal integrity intact across the entire span. The 2A-137G (often searched as 2A 137G) is factory-new and RoHS-compliant, sourced direct from the manufacturer.
Where most deployments hit a ceiling with copper or multimode fiber at a few hundred meters, the 2A-137G pushes that boundary to 10 km — making it the right call for industrial campuses, government facilities, broadcast plants, and data center interconnects where the KVM head-end and the remote operator station are in entirely different buildings.
Key Features
- 10,000-Meter Single-Mode Reach: At 10 km maximum transfer distance over SMF, the 2A-137G covers campus-scale and inter-building deployments that copper SFP or multimode transceivers cannot. If you're running fiber conduit between buildings already, this module lets you use it for KVM extension without a separate repeater.
- 1250 Mbps Data Rate: Gigabit-class throughput at 1250 Mbps means the KVM signal — including uncompressed video, keyboard, mouse, and USB — transfers without bandwidth-imposed latency penalties. You're not trading link capacity for distance.
- 1310 nm Wavelength on Standard SMF: The 1310 nm operating wavelength is compatible with the vast majority of installed single-mode fiber plant (ITU-T G.652 and equivalent), so in most facilities you can plug into existing dark fiber rather than pulling new cable.
- Digital Diagnostics Monitoring (DDM): DDM support lets network management software read real-time optical power levels, temperature, voltage, and bias current directly from the transceiver. In practice, this means you can detect a degrading fiber path — or a failing module — before it causes an outage rather than after.
- SFP Form Factor — Hot-Swappable: The standard SFP interface means the module can be replaced in the field without powering down the host extender. For 24/7 control-room environments where downtime is not an option, this matters.
- 0°C to 70°C Operating Range: Covers standard IT and light-industrial environments. The extended storage temperature range of -40°C to 85°C means modules can be warehoused or shipped in temperature-variable conditions without risk of damage before deployment.
- RoHS Compliance + IEC/FDA Laser Certifications: RoHS compliance satisfies EU and many domestic environmental procurement requirements. IEC 825, EN 60825-1, and FDA 21 CFR 1040.10 laser safety certifications confirm the module meets Class 1 laser standards — relevant for facilities with safety-conscious procurement review processes.
- Compact, Rack-Context Form Factor: At 144.6 mm × 55.9 mm × 13 mm, the module is a standard SFP plug-in — it adds zero rack space. The black/metallic finish is consistent with ATEN extender hardware aesthetics.
Integration and Compatibility
The 2A-137G is designed for use with the ATEN KVM extender line, specifically the KE8950 and KE8952 KVM-over-IP extenders. These extenders use SFP ports to support fiber uplinks; this module populates that port for long-distance single-mode deployments. If your KE8950 or KE8952 installation currently uses copper SFP or multimode fiber and you need to extend reach beyond what those links support, the 2A-137G is the manufacturer-specified upgrade path.
For deployments that require structured fiber KVM extension across a campus backbone — broadcast master control rooms, secure government workstations, industrial SCADA operator stations — pair the 2A-137G with a pre-terminated single-mode patch cable and ensure the far-end extender is also equipped with a matching SFP module. Both ends of the fiber link must use compatible transceivers; verify with your fiber plant documentation before ordering a single module versus a matched pair.
If you're planning the broader KVM-over-IP architecture, review the KVM switches and matrix systems in the ATEN catalog for head-end aggregation options that support the KE89xx extender family. For structured cabling and fiber patch panel infrastructure to support this deployment, network accessories and fiber patch panels are available to complete the link.
Frequently Asked Questions
Q: What extenders is the 2A-137G compatible with?
A: The 2A-137G is specified for use with the ATEN KE8950 and KE8952 KVM-over-IP extenders. These models include an SFP port that accepts this module for long-distance fiber uplinks.
Q: Does the 2A-137G work with multimode fiber?
A: No. The 2A-137G is a single-mode fiber (SMF) transceiver operating at 1310 nm. It is not compatible with multimode fiber infrastructure. If your facility uses multimode fiber (OM1–OM4), you will need a different transceiver specified for multimode.
Q: What is the maximum cable distance supported?
A: The 2A-137G supports a maximum transfer distance of 10,000 meters (10 km / approximately 6.2 miles) over single-mode fiber.
Q: Does the 2A-137G support Digital Diagnostics Monitoring?
A: Yes. The module supports DDM (Digital Diagnostics Monitoring), which allows real-time monitoring of optical power levels, temperature, voltage, and bias current via compatible network management tools.
Q: What certifications does the 2A-137G carry?
A: The 2A-137G is RoHS compliant and carries laser safety certifications under IEC 825, EN 60825-1, and FDA 21 CFR 1040.10.
Q: Do I need one module or two for a complete fiber link?
A: You need one SFP module at each end of the fiber link — one in the local KE8950/8952 and one in the remote unit. If only one end is currently equipped, you will need a second 2A-137G (or compatible matching transceiver) to complete the link.
The 2A-137G is straightforward to spec once you know the fiber plant — single-mode only, 10 km ceiling, 1310 nm. Where I see teams get caught is assuming they can mix transceiver types at each end of the link. Both the local KE8950/8952 and the remote unit need matched SFP modules; the 2A-137G is the ATEN-specified module for this extender pair, and running a mismatched or third-party transceiver on the far end is asking for link instability.
Technical Highlights:
- DDM (Digital Diagnostics Monitoring): Real-time optical layer visibility — Tx/Rx power, temperature, bias current — without additional test equipment. In a long-haul 10 km run, early detection of fiber degradation or connector contamination is the difference between a planned maintenance window and an emergency outage.
- 1250 Mbps Throughput: Full gigabit capacity over the fiber link means the KE89xx extender is not the bottleneck. The KVM signal, USB data, and video all share that pipe without compression-induced latency at supported resolutions.
- Operating Temperature 0°C to 70°C: Appropriate for conditioned IT spaces and standard network closets. The -40°C to 85°C storage range is practical for facilities that stage equipment in unheated warehouses before installation.
Deployment Considerations:
- Verify your fiber plant is single-mode (G.652 or equivalent) before ordering. Plugging a 1310 nm SMF transceiver into a multimode patch panel will result in no link — fiber type mismatch is the most common installation error on this class of module.
- You need two matched SFP modules for a complete link — one at each extender. Budget and order accordingly; a single module is only half the solution.
This module is the right call for broadcast master control facilities, government campus KVM deployments, and industrial SCADA environments where the operator station and the managed hardware are in separate buildings connected by existing single-mode dark fiber infrastructure.
