Rose electronics CrystalLink USB-3-2-1 Fiber User manual

CrystalLink USB
-3-2-1 Fiber
USB
-3-2-1/2.0/1.1 Multimode Fiber Extender
Installation
and
Operation Manual
10707 Stancliff Road
Houston, Texas 77099
Phone: [phone]
[email protected]

LIMITED WARRANTY
Copyright Rose Electronics 2018. All rights reserved.
No part of this manual may be reproduced, stored in a retrieval system, or transcribed in any form or any means, electronic or mechanical, including photocopying and
recording, without the prior written permission of Rose Electronics.
manual-crystallink-usb-3-2-1-fiber-2018-03-06
Rose Electronics®warrants the CrystalLink USB-3-2-1 Fiber Extender to be in good working order for one year
from the date of purchase from Rose Electronics or an authorized dealer. Should this product fail to be in good
working order at any time during this one-year warranty period, Rose Electronics will, at its option, repair or
replace the Unit as set forth below. Repair parts and replacement units will be either reconditioned or new. All
replaced parts become the property of Rose Electronics. This limited warranty does not include service to
repair damage to the Unit resulting from accident, disaster, abuse, or unauthorized modification of the Unit,
including static discharge and power surges.
Limited Warranty service may be obtained by delivering this unit during the one-year warranty period to Rose
Electronics or an authorized repair center providing a proof of purchase date. If this Unit is delivered by mail,
you agree to insure the Unit or assume the risk of loss or damage in transit, to prepay shipping charges to the
warranty service location, and to use the original shipping container or its equivalent. You must call for a return
authorization number first. Under no circumstances will a unit be accepted without a return authorization
number. Contact an authorized repair center or Rose Electronics for further information.
ALL EXPRESS AND IMPLIED WARRANTIES FOR THIS PRODUCT INCLUDING THE WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO A
PERIOD OF ONE YEAR FROM THE DATE OF PURCHASE, AND NO WARRANTIES, WHETHER EXPRESS
OR IMPLIED, WILL APPLY AFTER THIS PERIOD. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW
LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
IF THIS PRODUCT IS NOT IN GOOD WORKING ORDER AS WARRANTIED ABOVE, YOUR SOLE
REMEDY SHALL BE REPLACEMENT OR REPAIR AS PROVIDED ABOVE. IN NO EVENT WILL ROSE
ELECTRONICS BE LIABLE TO YOU FOR ANY DAMAGES INCLUDING ANY LOST PROFITS, LOST
SAVINGS OR OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF OR
THE INABILITY TO USE SUCH PRODUCT, EVEN IF ROSE ELECTRONICS OR AN AUTHORIZED DEALER
HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER
PARTY.
SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES FOR CONSUMER PRODUCTS, SO THE ABOVE MAY NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS
WHICH MAY VARY FROM STATE TO STATE.

DECLARATIONS OF CONFORMITY
This is to certify that, when installed and used according to the instructions in this manual, the units listed and
described here are shielded against the generation of radio interferences in accordance with the application of
Council Directives 2014/30/EU and 2014/30/EU, as well as these standards:
■EN 55022: 2010/AC:2011 (Class B)
■EN 55024:2010 + A1:2015
■EN 55032
■EN 61000
This equipment has been found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the interference at their own expense.
The product safety of the devices is proven by their compliance with the following standards:
■CAN/CSA-ICES-003 Issue 6
The manufacturer complies with the EU Directive 2012/19/EU on the prevention of waste electrical and
electronic equipment (WEEE). The device labels carry a respective marking.
These devices comply with Directive 2011/65/EU of the European Parliament and of the council of 8 June
2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(RoHS 2, RoHS II). The device labels carry a respective marking.

TABLE OF CONTENTS
Contents
Disclaimer 1
System Introduction 1
Features 1
Package Contents 2
Additional Items Required 2
Application Examples 2
CrystalLink USB-3-2-1 Fiber Extender Models 3
Transmitter Unit 3
Receiver Unit 4
Installation Procedure 6
Cabling Requirements 6
Equipment Location 6
Installing the Transmitter 7
Installing the Receiver 7
Connecting the Transmitter to the Receiver 8
Checking the Installation 8
Connecting a USB Device 8
Compatibility 9
Ethernet Pass-Through Connection 9
Transmitter and Receiver Mounting Options 9
Option 1: USB Extender Mounting Bracket Kit 9
Option 2: USB Extender Mounting Plate 9
Troubleshooting 11
Safety 14
Maintenance and Repair 15
Technical Support 15
Figures
Figure 1. transmitter unit – LED’s and connectors 4
Figure 2. Receiver unit – LED’s and connectors 5
Figure 3. CrystalLink USB-3-2-1 fiber extender – standard installation 6
Figure 4. Installing transmitter unit cables 7
Figure 5. Installing receiver unit cables 7
Figure 6. Chassis mounting options 10
Tables
Table 1. Troubleshooting procedures ............................................................................................. 13
Appendices
Appendix A —Specifications 16

INTRODUCTION
CrystalLink USB-3-2-1 Fiber Extender Manual 1
Disclaimer
While every precaution has been taken in the preparation of this manual, the manufacturer assumes no
responsibility for errors or omissions. Neither does the manufacturer assume any liability for damages resulting
from the use of the information contained herein. The manufacturer reserves the right to change the
specifications, functions, circuitry of the product, and manual content at any time without notice.
The manufacturer cannot accept liability for damages due to misuse of the product or other circumstances
outside the manufacturer’s control. The manufacturer will not be responsible for any loss, damage, or injury
arising directly or indirectly from the use of this product (See limited warranty).
System Introduction
Thank you for choosing the Rose Electronics CrystalLink USB-3-2-1 fiber extender.
The CrystalLink USB-3-2-1 fiber extender provides simultaneous and transparent USB extension for all USB-3-
2-1, 2.0 and 1.1 devices up to 656 feet (200 meters) over a duplex LC multimode fiber cable.
Up to four USB devices such as a USB-3-2-1 conferencing camera, flash drives, hard drives, keyboards, mice,
interactive white boards, touchscreens, docking stations, USB to video converters, audio devices, and/or any
other USB-3-2-1, 2.0 and 1.0 device can be extended away from the host PC using the CrystalLink USB-3-2-1
fiber extender. Additional USB devices can be connected using a powered USB hub.
The CrystalLink USB-3-2-1 fiber extension system consists of two units, a transmitter and a receiver. The
transmitter connects to your computers’ USB port. The transmitter is linked directly to the receiver using
industry standard OM3 duplex multimode fiber cable and the USB devices connect to the receiver.
To support the USB-3-2-1 SuperSpeed of up to 5Gbps, the CrystalLink USB-3-2-1 fiber extender must be
connected directly to the USB-3-2-1 port of a host device.
The instructions in this manual assume a general knowledge of computer installation procedures, familiarity
with cabling requirements, and some understanding of USB device operation.
Features
■Supports a duplex LC multimode fiber cable up to 656 feet (200 meters)
■Supports transparent USB-3-2-1 Gen 1 SuperSpeed data rates up to 5Gbps
■Supports all USB-3-2-1, 2.0, 1.1 devices simultaneously at full bandwidth
■Backwards compatible with USB2.0 and USB1.1 devices
■Four USB3.0 Gen 1 receiver ports, each with up to 1.2 Amp (6W) power
■Attach up to 3 powered USB hubs for additional remote USB device support
■Ethernet 100/1000 pass-through for connecting to network enabled device
■Plug and Play. No software drivers required
■Supports all major operating systems: Windows®, MAC OS™, Linux® and Chrome OS™
■Made in North America

CrystalLink USB-3-2-1 Fiber Extender Manual 2
Package Contents
The package contents consist of the following:
■Transmitter unit
■Receiver unit
■USB-3-2-1 Gen 1 cable
■24V DC Power Adapter (2) and AC power cable (2). (Transmitter is 1A, Receiver is 2.71A)
■Installation & Operation Manual
Additional Items Required
■USB compatible computer (host computer) with a USB compliant operating system
■USB compatible device(s) for remote-end connection
■Fiber optic OM3 duplex LC multimode cable up to a maximum of 656ft (100m).
All references to fiber cable in this document refer to OM3 duplex LC multimode fiber cable.
Application Examples
The CrystalLink USB-3-2-1 fiber extender is ideal for use with USB-3-2-1 conferencing cameras or in
computer room or industrial environments where USB devices need to be connected remotely from a host PC.
■Industrial control
■Interactive whiteboard
■Connection to network attached devices
■Boardroom and conferencing presentations. Connect to a USB-3-2-1 videoconferencing camera to provide
video, control and power over a single USB-3-2-1 Gen 1 cable
■Operation of equipment in hazardous environments
■Extension of multiple USB devices including hard drivers, printer, scanner, camera control, touchscreens

MODELS
CrystalLink USB-3-2-1 Fiber Extender Manual 3
CrystalLink USB-3-2-1 Fiber Extender Models
The CrystalLink USB-3-2-1 fiber extender enables users to locate high-speed USB device(s) up to 656 feet
(200 meters) from the computer.
Transmitter Unit
The transmitter connects to the host device using the supplied USB3.1 Gen 1 cable. Power for the transmitter
is provided by included 24V 1A power adapter. Power and status LED’s are conveniently located on the front
panel for user reference.
Transmitter unit – front panel view
Transmitter unit – rear panel view
Item Type Description
1 Power LED LED is SOLID ON when DC power is supplied to the extender unit. LED is
OFF when no power is supplied by the AC adapter.
2 Mode/Config Reserved for engineering use
3
Status LED
LED is SOLID ON when the system is functioning normally. LED BLINKS
when the system is booting or to indicate a temperature warning together
with the LINK, USB 2, and USB3 LEDs.
Link LED
LED is SOLID ON when the transmitter is linked to an opposite receiver
unit. LED is OFF when there is no connection between the transmitter and
receiver.
USB2.0 LED
LED is SOLID ON when an active USB2.0 connection is established through
the extender system. LED BLINKS when the USB2.0 connection is
suspended/asleep. LED is OFF when no USB2.0 connection is detected.
USB-3-2-1 LED
LED is SOLID ON when an active USB3.1
connection is established through
the extender system. LED BLINKS when the USB3.1 connection is
suspended/asleep. LED is OFF when no USB3.1 connection is detected.
4 LAN port (RJ45)
(100/1000 Mbps) Ethernet pass through channel connects to a network or Ethernet device.
7
6
4
5
3
2
1

CrystalLink USB-3-2-1 Fiber Extender Manual 4
5 Link port (LC) Duplex LC fiber port to connect the transmitter to the receiver.
6 USB host port USB3.1 Type B connector is used to connect the transmitter to the USB3.1
host computer.
7 DC power port Locking connector for the included 24VDC 1A power adapter
Figure 1. transmitter unit – LED’s and connectors
Receiver Unit
The receiver has four USB3.11 Type-A ports for connecting up to four USB devices. Additional devices may be
connected by attaching a USB hub to the receiver unit. The receiver is powered directly by the included 24V
2.71A power supply, delivering 1.2 Amp of current per USB port.
Receiver unit – front panel view
Receiver unit – rear panel view
Item Type Description
1 Power LED LED is SOLID ON when DC power is supplied to the extender unit. LED is OFF
when no power is supplied by the AC adapter.
2 Mode/Config Reserved for engineering use
3
Status LED
LED is SOLID ON when system is functioning normally. LED BLINKS when system
is booting OR to indicate a temperature warning in unison with the LINK,
USB2.0, and USB3.1 LEDs.
Link LED LED is SOLID ON when transmitter is linked to an opposite receiver. LED is OFF
when there is no connection between the transmitter and receiver.
USB 2 LED
LED is SOLID ON when an active USB2.0 connection is established through the
extender system. LED BLINKS when the USB2.0 connection is suspended/asleep.
LED is OFF when no USB2.0 connection is detected.
USB-3-2-1 LED
LED is SOLID ON when an active USB3.11 connection is established through the
extender system. LED BLINKS when the USB3.11 connection is
suspended/asleep. LED is OFF when no USB3.11 connection is detected.
7
6
5
4
3
2
1

CrystalLink USB-3-2-1 Fiber Extender Manual 5
4 LAN Port (RJ45)
(100/1000 Mbps) Ethernet pass through channel connects to a network or Ethernet device.
5 Link Port (LC) Duplex LC fiber port to connect the transmitter to the receiver.
6 Device Ports
(USB3.1 Type A) Accepts all USB devices.
7 DC Power Port Locking connector for the included 24VDC 2.71A power adapter
Figure 2. Receiver unit – LED’s and connectors

INSTALLATION
CrystalLink USB-3-2-1 Fiber Extender Manual 6
Installation Procedure
Before beginning an installation, ensure you have all products and components ready for the installation
Cabling Requirements
The CrystalLink USB-3-2-1 fiber extender requires duplex multimode 50/125μm OM3 grade cable. The cabling
subsystem must provide a duplex connection with crossover and must be terminated with duplex LC fiber
connectors at both ends.
Figure 3. CrystalLink USB-3-2-1 fiber extender – standard installation
Equipment Location
Before installing the CrystalLink USB-3-2-1 fiber extender, you will need to prepare your site and cable
distance measurements.
■Place the computer in the preferred location and set it up.
■Ensure to locate your USB device(s) within the recommended fiber cable-length from the computer. If not,
adjust the location of your device(s) and/or computer accordingly.
Local LAN
USB-3.1Host
TX Unit
RX Unit
Fiber
Optic
Cable
Network Camera
USB Devices

CrystalLink USB-3-2-1 Fiber Extender Manual 7
Installing the Transmitter

Place the transmitter unit near the computer.

Assemble the power adapter and power cord together and connect them into a suitable AC outlet.

Connect the supplied USB3.1 Gen 1 cable between the transmitter USB-B port and a USB3.1 port on
the host computer.
Local LAN Cable Fiber Cable USB-AB Cable Power Cable
Figure 4. Installing transmitter unit cables
Installing the Receiver

Place the receiver unit near the USB device(s).

Assemble the power adapter and power cord together and connect them into a suitable AC outlet.

Connect the power adapter to the receiver.
Local LAN Cable Fiber Cable USB Devices Power Cable
Figure 5. Installing receiver unit cables

CrystalLink USB-3-2-1 Fiber Extender Manual 8
Connecting the Transmitter to the Receiver
With Surface Cabling:

Plug one end of the fiber cable (not included) into the link port on the transmitter.

Plug the other end of the fiber cable into the link port on the receiver.
With Premise Cabling:

Plug one end of a fiber patch cord (not included) into the link port on the transmitter.

Plug the other end of the patch cord into the fiber information outlet near the host computer.

Plug one end of the second fiber patch cord (not included) into the link port on the receiver.

Plug the other end of the patch cord into the fiber information outlet near the USB device.
Checking the Installation
On the transmitter and receiver units, check that the Power, Status, Link, USB2 and USB3 LEDs are on. If the
Link LEDs are permanently off, then the cabling between the local and transmitter may not be installed
properly or is defective.
Check if the USB device is detected by your Operating System. (Note: If your computer does not correctly
detect the USB device when it is attached to your computer, then it may not function correctly)
For Windows (XP, 7, 8, 8.1, 10) users, open Device Manager to confirm that the CrystalLink USB-3-2-1 fiber
extender has been installed correctly. Expand the entry for Universal Serial Bus controllers by clicking the “+”
sign. You should find two separate instances of “Generic SuperSpeed USB Hub” listed.
To open Device Manager in Windows 2000/XP:
Right click on “My Computer”, then select Properties >>Hardware Tab>>Device Manager
To open Device Manager in Windows 7 and later:
Open the Start Menu, right click on “Computer” or the “Start Menu” then select Manage>>Device Manager
For MacOS users, open the System Profiler to confirm that the extender system has installed correctly. In the
left-hand column under Hardware, select “USB” and inspect the right-hand panel. If the CrystalLink USB-3-2-1
fiber extender has been installed correctly, you should find it listed as two separate instances of “Hub” under
the USB SuperSpeed Bus.
To open the System Profiler in MAC OS X:
Open Finder, Select Applications, then open the Utilities folder and double click on the System Profiler icon.
If the CrystalLink USB-3-2-1 fiber extender is not detected correctly or fails to detect, please consult the
Troubleshooting section in this manual.
Connecting a USB Device

Install any software required to operate the USB device and refer to the product documentation for
specific settings.

Connect the USB device to the device port on the receiver

Check that the device is detected and installed properly in the operating system.

CrystalLink USB-3-2-1 Fiber Extender Manual 9
Compatibility
The CrystalLink USB-3-2-1 complies with USB2.0 and USB3.1 Gen 1 specifications governing the design of
USB devices. However, there is no guarantee that all USB devices or hosts will be compatible as there are a
number of different characteristics that may impact the operation of USB devices over extended distances.
Ethernet Pass-Through Connection
The CrystalLink USB3.1 provides a 100/1000 Mbps Ethernet pass through connection that can be used for a
variety of purposes including:

Connecting network devices

Providing remote network access to the same location as the transmitter

Leveraging existing cabling to provide USB3.1, USB2.0 or USB1.1 connectivity without losing network
connectivity
Connect any network device or access port into the RJ45-LAN port using up to 330ft (100m) of standard LAN
cabling.
Transmitter and Receiver Mounting Options
The bottom of the chassis includes four convenient pre-drilled holes for optional mounting. Based on your
requirements, choose from two available mounting options:

USB Extender Mounting Kit (Purchased separately - USB Mounting Kit - Black)

USB Extender Direct Surface Mounting (Using your own rack-shelf or tray)
Option 1: CrystalLink USB-3-2-1 Fiber Extender Mounting Bracket Kit
Contents:
2 mounting brackets
4 (M3) locking washers
4 (M3 x 10mm) Phillips screws
Mounting bracket installation guide (see diagram below)
1 kit required to mount per transmitter chassis or receiver chassis
Using a Phillips screwdriver, fasten and secure the provided screws, locking washers and brackets into place.
Option 2: CrystalLink USB-3-2-1 Fiber Extender Mounting Plate
(using your own rack-shelf or rack-tray) The bottom of the enclosure features four pre-drilled holes for optional
surface mounting.
Note: Do not exceed a screw depth of 0.4” (10mm) into the chassis or damage may occur.

CrystalLink USB-3-2-1 Fiber Extender Manual 10
CrystalLink USB-3-2-1 Mounting Bracket Illustration
CrystalLink USB-3-2-1 Mounting Plate Holes
Figure 6. Chassis mounting options
Mounting plate
holes
Distance between
the mounting holes
is 1.653” x 8.090”
(42.0 x 205.5mm)

TROUBLESHOOTING
CrystalLink USB-3-2-1 Fiber Extender Manual 11
Troubleshooting
The following table provides troubleshooting tips. The topics are arranged in the order in which they should be
executed in most situations. If you are unable to resolve the problem after following these instructions, please
contact Technical Support for further assistance.
PROBLEM CAUSE SOLUTION
ALL LEDs are OFF on the
transmitter and/or receiver.
The transmitter and/or
receiver is not receiving power
from the AC power adapter.
Ensure that the AC power adapter is properly
connected to the transmitter and/or receiver.
Check that the AC adapter is connected to a
live source of AC power. Check that the
transmitter and/or receiver’s Power LED is
illuminated.
POWER LED is ON, STATUS
LED is OFF.
The unit has malfunctioned
and requires re-programming.
Contact Technical Support for assistance.
Link LEDs on the transmitter
and receiver are OFF.
There is no connection
between the transmitter and
receiver.
Ensure that no more than 656ft (200m) of
OM3 multimode fiber cabling is connected
between the transmitter and receiver.
Connect a short fiber cable between the
transmitter and receiver. Recheck the link
status. If the LINK LED is now SOLID ON, the
previous cable is defective or not capable of
supporting the link.
LINK LEDs on the
transmitter and receiver
are SOLID ON, but the
USB2 and USB3 LEDs are
OFF.
The host computer is not
powered on.
The transmitter is not
connected to a computer.
The host computer does not
support USB Hubs.
The unit is malfunctioning.
Disconnect all USB devices from the receiver.
Disconnect transmitter from the host
computer.
Disconnect AC adapters from transmitter and
receiver.
Reconnect the transmitter to the host
computer.
Reconnect the AC adapters to the transmitter
and receiver.
Check that the transmitter and receiver have
enumerated as USB hubs in Windows Device
Manager, MacOS System Profiler or using
“Isusb” command in a Linux Terminal.
If the problem is not resolved, contact
Technical Support.
The USB2.0 LED is SOLID
ON, but the USB3.0 LED is
OFF.
The transmitter is not
connected to a USB3.1 port.
The transmitter is connected to
the host using a USB2.0 cable.
The USB3.1 cable connecting
the transmitter to the host
computer is defective.
The host computer’s USB3.1
controller has malfunctioned.
Ensure that the transmitter is connected to a
USB3.1 port on the host computer.
Ensure that the included USB3.1 Gen 1 cable is
being used between the host computer and
transmitter.
Cold boot the host computer.
Replace the USB3.1 Gen 1 cable with a
different cable.
If the problem is not resolved, contact
Technical Support.

CrystalLink USB-3-2-1 Fiber Extender Manual 12
PROBLEM CAUSE SOLUTION
The USB-3-2-1 LED is
SOLID ON, but the USB2.0
LED is OFF.
The USB cable connecting the
transmitter to the host
computer is defective.
The host computer’s USB2.0
controller has malfunctioned.
The host computer does not
support USB2.0.
Ensure that the included USB3.1 Gen 1 cable is
being used between the host computer and
transmitter.
Cold boot the host computer.
Replace the USB3.1 Gen 1 cable with a
different cable.
If the problem is not resolved, contact
Technical Support.
Both the transmitter and
receiver are working, but
the USB2 or USB3 LEDs on
the transmitter and
receiver are blinking.
The transmitter and/or
receiver is in suspend mode.
For a variety of reasons, the
host computer may place the
transmitter or receiver into
suspend mode. Typically, it is
because there are no USB
devices attached, the USB
device is asleep, or the host
computer is in a sleep state or
hibernating.
Recover/resume the operating system from
sleep or hibernate modes (refer to your
operating system’s documentation).
Connect a USB device to the receiver.
Use the connected device.
If the problem persists, contact Technical
Support.
ALL LEDs on both the
transmitter and receiver
are SOLID ON, but the USB
device is not operating
correctly, or is detected as
an “Unknown Device” in the
operating system.
The USB device is
malfunctioning.
The computer does not
recognize the USB device.
The application software for
the USB device is not
operating.
The USB extender is
malfunctioning.
Disconnect the transmitter from the computer.
Connect the USB device directly to the host
computer.
If the device does not operate as expected,
consult the user documentation for the device.
Update the host computer BIOS, chipset or
USB controller drivers from the manufacturer’s
website.
If the device operates as expected when
directly connected to the computer, connect
another device to the extender and reconnect
it to the host computer.
If the second device does not operate, the
extender may be malfunctioning. Contact
Technical Support for assistance.
If the second device operates as expected,
then the first device may not be compatible
with this extender. Contact Technical Support.

CrystalLink USB-3-2-1 Fiber Extender Manual 13
PROBLEM CAUSE SOLUTION
A USB3.1 device is not
enumerating as USB3.1, or
the operating system is
notifying the user that the
device can “Perform Faster if
connected to a USB3.1 port”.
The USB device is
malfunctioning.
The computer does not
recognize the USB device.
The application software for
the USB device is not
operating.
The USB3.1 port on the
computer is malfunctioning.
The USB extender is
malfunctioning.
Disconnect the transmitter from the
computer.
Connect the USB3.1 device directly to the
host computer.
If the device does not operate as expected as
a USB3.1 device, consult the user
documentation for that device or try a
different USB port on the host computer.
Update the host computer BIOS, chipset or
USB controller drivers from the
manufacturer’s website.
If the device operates as a USB3.1 device
when directly connected to the computer,
connect another USB3.1 device to the
extender and reconnect it to the host
computer.
If the second device does not operate as a
USB3.1 device, the extender may be
malfunctioning. Contact Technical Support for
assistance.
If the second device operates as a USB3.1
device as expected, the first device may not
be compatible with this extender. Contact
Technical Support.
All LEDs are flashing, and the
system is operational.
Unit is or was operating at an
unsafe temperature.
Check ambient temperature. Ensure
temperature does not exceed 50°C (122°F).
Power cycle the unit to remove LED status.
All LEDs are flashing, and the
system is NOT operational.
Unit has exceeded safe
operating temperature.
Remove external sources of heat or change
location of the unit.
Power cycle the unit to return to operation.
LEDs are scrolling LEFT to
RIGHT, starting with STATUS.
Unit is programming. Wait for the unit to finish programming.
Table 1. Troubleshooting procedures

PRODUCT SAFETY
CrystalLink USB-3-2-1 Fiber Extender Manual 14
Safety
The CrystalLink USB-3-2-1 fiber extender, like all electronic equipment, should be used with care. To protect
yourself from possible injury and to minimize the risk of damage to the Unit, read and follow these safety
instructions.

Follow all instructions and warnings marked on this Unit.

Except where explained in this manual, do not attempt to service this Unit yourself.

Do not use this Unit near water.

Assure that the placement of this Unit is on a stable surface.

Provide proper ventilation and air circulation.

Keep connection cables clear of obstructions that might cause damage to them.

Use only power cords, power adapter and connection cables designed for this Unit.

Keep objects that might damage this Unit and liquids that may spill, clear from this Unit. Liquids and
foreign objects might come in contact with voltage points that could create a risk of fire or electrical
shock.

Do not use liquid or aerosol cleaners to clean this Unit. Always unplug this Unit from the power source
before cleaning.
Remove power from the unit and refer servicing to a qualified service center if any of the
following conditions occur:

The connection cables are damaged or frayed.

The Unit has been exposed to any liquids.

The Unit does not operate normally when all operating instructions have been followed.

The Unit has been dropped or the case has been damaged.

The Unit exhibits a distinct change in performance, indicating a need for service.

SERVICE AND MAINTENANCE
CrystalLink USB-3-2-1 Fiber Extender Manual 15
Maintenance and Repair
This Unit does not contain any internal user-serviceable parts. In the event a Unit needs repair or maintenance,
you must first obtain a Return Authorization (RA) number from Rose Electronics or an authorized repair center.
This Return Authorization number must appear on the outside of the shipping container.
See Limited Warranty for more information.
When returning a Unit, it should be double-packed in the original container or equivalent, insured and shipped
to:
Rose Electronics
Attn: RA __________
10707 Stancliff Road
Houston, Texas 77099 USA
Technical Support
If you are experiencing problems, or need assistance installing your product, consult the appropriate section of
this manual. If, however, you require additional information or assistance, please contact the Rose Electronics
Technical Support Department at:
Phone: [phone]
E-mail: T[email protected]
Web: www.rose.com
Technical Support hours are from: 8:00 am to 6:00 pm CST (USA), Monday through Friday.
Please report any malfunctions in the operation of this Unit or any discrepancies in this manual to the Rose
Electronics Technical Support Department.

APPENDICES
CrystalLink USB-3-2-1 Fiber Extender Manual 16
Appendix A —Specifications
Part Numbers Description
CLK-4U321FM-200M CrystalLink USB-3-2-1 fiber extender
RM-UD/CLK321 Rackmount "L" bracket for mounting TX or RX unit on a shelf, under desk, or
flat surface. (Not for 19" rack)
Chassis Dimensions (W x D x H) and Weight
Transmitter and Receiver chassis
Weight
9.1” x 5.4” x 1.3” (232 x 137.3 x 33 mm)
5.87 lbs. (2.67kg)
Power Requirements
Power source Transmitter: 100-240VAC, AC input, 24V 1A DC output
Receiver: 100-240VAC, AC input, 24V 2.71A DC output
Maximum current for USB devices Receiver: Up to 1.2 Amp (6W) per USB port
Interconnect Cable Requirements
Multimode Fiber Multimode fiber 50/125μm OM3 grade cable with LC connectors
Cable Distances
Multimode Fiber Up to 656 feet (200 meters) over multimode fiber cable.
USB Support
USB Bandwidth Up to 5Gbps
USB Device Support
Gen 1 USB-3-2-1 devices at 5Gbps (all device types and hubs)
High-speed devices (USB 2.0) at 480Mbps, backwards compatible
Full-speed devices (USB 1.1), 12Mbps, backwards compatible
USB Hub Support Up to 3 powered USB hubs with 26 USB devices. The extension distance may
be reduced with each hub added to the system.
USB Host Support XHCI (USB-3-2-1), EHCI (USB 2.0) and OHCI/UHCI (USB 1.1)
USB-3-2-1 host supported at up to 5Gbps
Connectors and LED’s
Transmitter unit Receiver unit
USB connector 1 x USB-3-2-1 Gen 1 Type B 4 x USB-3-2-1 Gen 1 Type A female
Link cable connector 1 x Duplex fiber LC 1 x Duplex fiber LC
Network Pass Through 1 x RJ45 100/1000 LAN Port 1 x RJ45 100/1000 LAN Port
LED’s Power, Status, Link, USB2, USB3 Power, Status, Link, USB2, USB3
Environmental
Operating Temp 32°F to 122°F (0°C to 50°C)
Storage Temp -4°F to 158°F (-20°C to 70°C)
Operating Humidity 20% to 80% relative, non-condensing
Storage Humidity 10% to 90% relative, non-condensing
Approvals FCC Part 15 Class B, CE Class B, ICES-003 Class B, EMC EN55022, EN55024,
EN55032 and EN61000, RoHS2 (CE), WEEE