Adder XD150FX-SM-US – Single-Mode Fiber DVI KVM Extender, 4km

Product Overview

The Adder XD150FX-SM-US AdderLink XD150FX is a single-mode fiber KVM extender pair that carries dual-link DVI video, transparent USB 2.0, and bidirectional audio up to 4km (2.5 miles) over a single duplex LC fiber cable. Designed as a long-distance DVI KVM extender over fiber, it lets facilities relocate critical computers into a secure, climate-controlled room while users keep a visually lossless, real-time desktop at resolutions up to 2560x1600 @ 60Hz. For campuses and venues that need a fiber optic KVM extender with USB 2.0 and audio, the XD150FX delivers all signals on one cable with full electrical isolation.

Product Description

The XD150FX ships as a complete transmitter and receiver pair fitted with SFP cages, and this SM version includes single-mode optics rated for 4km (13,123ft) over OS1/OS2 fiber. Because the link is optical, the extension is immune to electrical interference and provides galvanic isolation between buildings — a practical advantage for inter-building runs and electrically noisy industrial environments.

Video extension is visually lossless with no visible artifacts or latency, so operators retain confident, real-time control of CAD stations, video walls, and editing systems at distance. Dual-link DVI resolutions to 2560x1600 @ 60Hz are supported, with intelligent EDID management passing the true characteristics of the remote monitor back to the source computer.

USB 2.0 support is transparent across low, full, and high speeds, including isochronous devices such as webcams and headsets, with a built-in 4-port USB hub at the receiver. Bidirectional CD-quality analog audio (24-bit sampling at 96kHz) covers line in/out plus microphone and headphones, and RS232 passes between the units at up to 115,200 baud with RTS/CTS flow control.

Each unit can be monitored and controlled through a built-in web interface secured by HTTP digest authentication, and a REST API allows authorized third-party control systems to integrate the extender into wider room automation. The pair is plug and play — delivered zero-config with no drivers or software required. For copper-distance alternatives and the multimode version of this extender, see the XD150FX-MM-US or browse the full Adder Technology collection at Creation Networks.

Key Features

• 4km Single-Mode Fiber Extension — Extends DVI, USB 2.0, audio, and RS232 up to 4km/13,123ft over OS1/OS2 fiber with the included single-mode SFPs.
• Dual-Link DVI to 2560x1600 — Visually lossless video at up to 2560x1600 @ 60Hz with no visible artifacts or latency.
• Single Duplex LC Cable — Video, USB 2.0, and audio all travel on one duplex LC fiber link, simplifying pathways and patching.
• Transparent USB 2.0 with Isochronous Support — Keyboards, mice, tablets, touch screens, mass storage, webcams, and headsets all work through the receiver's 4-port hub.
• CD-Quality Bidirectional Audio — 24-bit/96kHz stereo with microphone and headphone support at the user position.
• Web Interface and REST API — Monitor temperature and status, control functions individually, and integrate with third-party control systems.
• Intelligent EDID Management — The true monitor characteristics are passed back to the computer for correct video output every time.
• Plug and Play, Fanless Design — Zero-config delivery, silent operation, and compact metal enclosures suitable for desks or racks.

Typical Applications

• Broadcast studio — place editing and playout machines in the central apparatus room with operators up to 4km away.
• Auditorium — run show-control and presentation computers from a remote rack room over existing campus fiber.
• Government space — electrically isolated fiber links between secure equipment areas and user positions.
• House of worship — keep production computers at front-of-house or in a media room while feeding the operator position over fiber.
• Multi-purpose room — centralize source PCs and extend full KVM control to changing room configurations.

Technical Specifications

Frequently Asked Questions

Is this a complete pair or a single unit?
XD150FX-SM-US is a complete extension kit including both transmitter and receiver units with US mains leads and single-mode SFP optics.

What fiber type do I need for the full 4km?
OS1 or OS2 single-mode (9/125) fiber with duplex LC connectors supports the rated 4km distance. If your plant is multimode, choose the XD150FX-MM-US instead.

Are webcams and USB headsets supported?
Yes. Unlike many extenders, the XD150FX supports isochronous USB devices, so webcams, headsets, and similar peripherals work at the remote position.

Does it work with my operating system?
All known operating systems are supported, and no drivers or software are required — the extender is fully transparent to the host.

Can it integrate with a room control system?
Yes. A REST API exposes all functionality to authorized third-party control systems, and a web interface provides status, temperature monitoring, and individual function control.

How do I rack-mount the units?
Optional accessories include the RMK8 19-inch rack kit (two units per 1U), RMK10 wall/desk mount, and RMK5V VESA mount for fixing behind a monitor.