
About the FOX T/R USB Extender Plus
The FOX T/R USB Extender Plus is a USB transmitter and receiver pair that extends USB
signals over fiber optic cabling. It is compatible with USB 3.0, 2.0, 1.1, and 1.0 devices with
transfer data rates up to 480 Mbps. It features peripheral emulation, an active four-port hub
that supplies 5 V, 500 mA per port, and real-time system monitoring.
The FOX HID Only USB Extender Plus models extend the usable distance of USB human
interface peripheral devices (HID) and smart card readers. HID peripherals include standard
keyboards, mice, hubs and other devices that do not require special USB device drivers.
In addition, the FOX T/R USB Extender Plus can work with an Extron FOX matrix switcher.
Multiple transmitters and receivers can be connected to switcher inputs and outputs that
are tied together (see Connecting Multiple Extenders to a FOX Matrix Switcher on
page 15).
The transmitters and receivers are available in singlemode and multimode versions, which
are differentiated by the type of fiber optic cable that defines their range of transmission:
• Singlemode — Up to 30 kilometers (18.6 miles)
• Multimode (OM1, 62.5 µm) — Up to 300 meters (985 feet)
• Multimode (OM2, 50 μm) — Up to 1 kilometer (3280 feet)
• Multimode OM3 and OM4 — Up to 2 kilometers (6561 feet)
NOTE: The multimode and singlemode units are physically and functionally identical,
with the exception of the effective range of transmission. In this guide, any reference
applies to either transmission mode model unless otherwise specified.
A FOX T/R USB Extender Plus system consists of a transmitter (Tx) and a receiver (Rx). The
transmitter connects directly to a USB port on a PC or USB host. The receiver features a
four port USB hub to connect multiple peripheral USB devices. The transmitter and receiver
both feature a front panel USB host activity LED, power indicator, and a fiber cable Link LED
for local or remote troubleshooting.
NOTE: The only visible difference between the standard and HID-only models is an “HID
Only” label on the enclosures of the HID-only models.
The FOX USB Extender Plus complies with the USB 2.0 standard, supporting USB 3.0 and
2.0 (480 Mbps high speed), USB 1.1 (12 Mbps full speed), and USB 1.0 (1.5 Mbps low
speed) for data transmission throughout the system. It also supplies +5 VDC (up to 500 mA)
of power on each of the receiver USB peripheral ports.
Features
• Extends USB peripherals very long distances over fiber optic cabling —
Supports long-distance KVM extension when used with FOX Series DisplayPort, HDMI,
DVI, and VGA products from Extron.
• Supports USB 3.0, 2.0, 1.1, and 1.0 devices with data transfer rates up to
480 Mbps — Allows high speed data transfer between the host and a mass storage
device such as a USB flash drive.
• Integrated four-port hub with 5 Volts, 500 mA available on each port of the
receiver — Allows simultaneous connection to multiple peripheral devices such as
mass storage devices, keyboards, mice, and other Human Interface Devices (HID).
• Peripheral emulation — Offers increased system reliability by emulating a continuous
connection between the host and an HID-compliant keyboard and mouse.
• Supports USB data transfers — Supports bulk, control, interrupt, and isochronous
transfers.
FOX T/R USB Extender Plus • Introduction 2