Black Box ICU504A User manual

Power Mode
Config
Status Link Video USB 2 USB 3
Power Mode
Config
Status Link Video USB 2 USB 3
ICU504A
U S B 3.1
CAT6A /7
EXTENDER
USER MANUAL
24/7 TECHNICAL SUPPORT AT 1.877.877.2269 OR VISIT BLACKBOX.COM

2
TABLE OF CONTENTS
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PRODUCT OPERATION AND STORAGE........................................................................................................................................... 3
1. SPECIFICATIONS........................................................................................................................................................................... 4
2. OVERVIEW...................................................................................................................................................................................... 5
2.1 Introduction...............................................................................................................................................................................................5
2.2 Features ....................................................................................................................................................................................................5
2.3 What’s Included........................................................................................................................................................................................5
2.4 Hardware Description..............................................................................................................................................................................6
2.4.1 Local Extender ....................................................................................................................................................................................................6
2.4.2 Remote Extender ...............................................................................................................................................................................................8
3. INSTALL ATION ............................................................................................................................................................................ 10
3.1 Cabling Guidelines..................................................................................................................................................................................10
3.2 Requirements for Installing the Extender ............................................................................................................................................10
3.3 Preparing Your Site ................................................................................................................................................................................ 11
3.4 Installing the Local Extender................................................................................................................................................................. 11
3.5 Connecting the Local Extender to the Remote Extender....................................................................................................................11
3.6 Installing the Remote Extender............................................................................................................................................................. 11
3.7 Checking the Installation.......................................................................................................................................................................12
3.8 Connecting a USB Device......................................................................................................................................................................12
3.9 Compatibility...........................................................................................................................................................................................12
3.10 Optional Ethernet Pass-through Connection .....................................................................................................................................13
4. OPTIONAL USB EXTENDER MOUNTING OPTIONS ................................................................................................................. 14
4.1 Option 1: USB Extender Mounting Kit ...................................................................................................................................................14
4.2 Option 2: USB Extender Direct Surface Mounting (Using Your Own Hardware) ..............................................................................15
5. TROUBLESHOOTING................................................................................................................................................................... 17
5.1 Troubleshooting Tips .............................................................................................................................................................................17
5.2 Contacting Black Box Technical Support.............................................................................................................................................19
APPENDIX A. REGULATORY INFORMATION ................................................................................................................................ 20
A.1 FCC Radio Frequency Interference Statement Warning.....................................................................................................................20
A.2 CE Statement .........................................................................................................................................................................................20
A.3 IC Statement ..........................................................................................................................................................................................20
A.4 WEEE Statement....................................................................................................................................................................................20
APPENDIX B. TECHNICAL GLOSSARY.......................................................................................................................................... 21
APPENDIX C. DISCLAIMER/TRADEMARKS ................................................................................................................................. 23
C.1 Disclaimer...............................................................................................................................................................................................23
C.2 Trademarks Used in this Manual..........................................................................................................................................................23

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PRODUCT OPERATION AND STORAGE
Please read and follow all instructions provided with this product, and operate for the intended use only.
Do not attempt to open the product casing as this may cause damage and will void the warranty. Use only the power supply provided with
this product. When not in use, the product should be stored in a dry location between -4 to +158° F (-20 to +70° C).

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CHAPTER 1: SPECIFICATIONS
TABLE 1-1. SPECIFICATIONS
SPECIFICATION DESCRIPTION
Range
Point-to-Point Up to 328 ft. (100 m) over CAT6a/7 cable
USB Device Support
Maximum Throughput 5 Gbps
Traffic Types All Traffic Types
Device Types All Device Types
Maximum Number of Devices and/or Hubs Up to 30 devices
Local Extender
USB Connector (1) USB 3.1 Gen 1 Type B
Link Connector (1) RJ-45 Link
Network Passthrough (1) RJ-45 LAN
Dimensions 1.3"H x 9.1"W x 5.4"D (3.3 x 23.2 x 13.7 cm)
Enclosure Material Black Anodized Aluminum
Power Supply Input: 100–240 VAC;
Output: 24-VDC, 1 A
Remote Extender
USB Connector (4) USB 3.1 Gen 1 Type B
Link Connector (1) RJ-45 Link
Network Passthrough (1) RJ-45 LAN
Dimensions 1.3"H x 9.1"W x 5.4"D (3.3 x 23.2 x 13.7 cm)
Enclosure Material Black Anodized Aluminum
Available Current Up to 1.2 A (6 W) to each USB port
Power Supply Input: 100–240 VAC;
Output: 24-VDC, 2.71 A
Environmental
Operating Temperature Range 32 to 122° F (0 to 50° C)
Storage Temperature Range -4 to +158° F (-20 to +70° C)
Operating Humidity 20 to 80% relative humidity, noncondensing
Storage Humidity 10 to 90% relative humidity, noncondensing
Compliance
EMC FCC Class B, CE Class B
Environmental RoHS2 (CE)

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CHAPTER 2: OVERVIEW
2.1 INTRODUCTION
This guide provides product information for the USB 3.1 CAT6a/7 Extender 4-Port (ICU504A), installation instructions and
troubleshooting guidelines. The instructions in this guide assume a general knowledge of computer installation procedures, familiarity
with cabling requirements, and some understanding of USB devices.
The ICU504A enables users to extend beyond the standard 16-foot (5-meter) cable limit for USB peripheral devices. With the Extender,
USB device(s) can be located up to 328 feet (100 meters) from the computer. The Extender is composed of two individual units: the local
extender and remote extender.
CAUTION: The local and remote extenders may be hot to the touch during operation.
2.2 FEATURES
The USB 3.1 Extender incorporates ExtremeUSB-C™ technology, enabling users to extend USB 3.1 beyond the standard 9.8-foot
(3-meter) cable limit for USB 3.1 peripheral devices. This extender system is composed of two individual units, the Local Extender
and the Remote Extender, and has the following key features:
Up to 328 feet (100 meters) of extension when directly connected over CAT 6a/7 cable
Support for new USB 3.1 Gen 1/2 host controllers and devices (up to 5 Gbps)
Support for all device USB types
Backwards compatible to USB 2.0 devices
NOTE: The USB 3.1 Extender includes the ExtremeUSB-C™ suite of features:
Transparent USB extension supporting USB 3, 2 and 1
True plug-and-play; no software drivers required
Works with all major operating systems: Windows®, macOS™, Linux®and Chrome OS™
NOTE: For best performance, install the USB 3.1 Extender using Shielded or Foiled CAT 6a/7 cable.
2.3 WHAT’S INCLUDED
Your package should include the following items. If anything is missing or damaged, contact Black Box Technical Support
at 877-877-2269 or [e-mail].
(1) Local Extender
(1) Remote Extender
(1) USB 3.1 Gen. 1 Cable
(1) Local Extender 24-VDC, 1-A International Power Adapter
(1) Remote Extender, 24-VDC, 2.71-A International Power Adapter
(2) Country-Specific Power Cords
(1) Quick Start Guide

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CHAPTER 2: OVERVIEW
2.4 HARDWARE DESCRIPTION
2.4.1 LOCAL EXTENDER
The local extender connects to the computer using a standard USB 3.1 Gen. 1 cable (included). Power for the local extender is provided
by the included 24-V, 1-A adapter.
Figures 2-1 and 2-2 show the front and back of the Local Extender. Table 2-1 describes its components.
Config
USB 2 USB 3ModePower LinkStatus
3
124567
FIGURE 2-1. LOCAL EXTENDER, FRONT VIEW
LAN 24V 1AUSB
Link
8910 11
FIGURE 2-2. LOCAL EXTENDER, BACK VIEW

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CHAPTER 2: OVERVIEW
TABLE 2-1. LOCAL EXTENDER COMPONENTS
NUMBER IN FIGURE 2-1
OR 2-2 COMPONENT DESCRIPTION
1 Power LED (Green) LED turns on when DC power is supplied to the unit.
LED is off when no power is supplied by the AC adapter.
2Mode button Reserved for manufacturer use.
3Config port Reserved for manufacturer use.
4 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, USB 2, and USB 3
LEDs.
5 Link LED (Green) LED is SOLID ON when Local Extender is linked to an opposite Remote Extender.
LED is OFF when there is no connection between the Local and Remote Extenders.
6 USB 2 LED
LED is SOLID ON when an active USB 2 connection is established through the extender
system. LED BLINKS when the USB 2 connection is suspended/asleep. LED is OFF when
no USB 2 connection is detected.
7 USB 3 LED
LED is SOLID ON when an active USB 3 connection is established through the extender
system. LED BLINKS when the USB 3 connection is suspended/asleep. LED is OFF when
no USB 3 connection is detected.
8 LAN Port (100/1000 Mbps) Ethernet passthrough channel connects to a network or Ethernet device.
9 Link Port (RJ-45) Accepts RJ-45 connector for CAT 6a/7 cabling to connect the Local Extender to the
Remote Extender.
10 USB Host Port USB 3 Type B receptacle used to connect Local Extender to USB 3 Host computer.
11 DC Power Port Locking connector for the included power adapter – accepts 24-VDC, 1-A.

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CHAPTER 2: OVERVIEW
2.4.2 REMOTE EXTENDER
The Remote Extender provides USB 3.1 Type A ports for standard USB devices and allows you to connect up to four USB devices directly.
Additional devices may be connected by attaching up to three USB hubs to the Remote Extender. The Remote Extender is powered by an
external 24-VAC, 2.71-A adapter, supplying up to 1.2 Amp per USB port.
Figures 2-3 and 2-4 show the front and back of the Remote Extender. Table 2-2 describes its components.
Config
USB 2 USB 3ModePower LinkStatus
3
124567
FIGURE 2-3. REMOTE EXTENDER, FRONT VIEW
LAN USBUSB USB USB
Link
24V 2.71A
8910 10 10 10
11
FIGURE 2-4. REMOTE EXTENDER, BACK VIEW

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CHAPTER 2: OVERVIEW
TABLE 2-2. REMOTE EXTENDER COMPONENTS
NUMBER IN FIGURE 2-3 OR 2-4 COMPONENT DESCRIPTION
1 Power LED (Green) LED turns on when DC power is supplied to the unit.
LED is off when no power is supplied by the AC adapter.
2Mode button Reserved for manufacturer use.
3Config port Reserved for manufacturer use.
4 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, USB 2, and USB 3
LEDs.
5 Link LED (Green) LED is SOLID ON when Remote Extender is linked to an opposite Local Extender.
LED is OFF when there is no connection between the Local and Remote Extenders.
6 USB 2 LED
LED is SOLID ON when an active USB 2 connection is established through the extender
system. LED BLINKS when the USB 2 connection is suspended/asleep. LED is OFF when
no USB 2 connection is detected.
7 USB 3 LED
LED is SOLID ON when an active USB 3 connection is established through the extender
system. LED BLINKS when the USB 3 connection is suspended/asleep. LED is OFF when
no USB 3 connection is detected.
8LAN Port
(100/1000 Mbps) Ethernet passthrough channel connects to a network or Ethernet device.
9 Link Port (RJ-45) Accepts RJ-45 connector for CAT 6a/7 cabling to connect the Remote Extender to the
Local Extender.
10 (4) USB Device Ports Accepts all USB devices.
11 DC Power Port Locking connector for the included power adapter – accepts 24-VDC, 2.71-A.

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CH APTE R 3: INSTALL ATION
3.1 CABLING GUIDELINES
The USB 3.1 Extender requires a minimum grade of Category 6a cabling to be used in order to reach 328 feet (100 meters) of extension
distance.
NOTE: The total distance of 328 feet (100 meters) also includes the length of the patch cable if one is required. Up to 32.8 feet (10 meters)
of patch cable can be used, although the remaining 295 feet (90 meters) distance must consist of solid-core premise cabling.
Depending upon specific application requirements, we recommend that installers keep in mind how they intend to pull/route the link
cable and whether to use Shielded or Foiled cable where appropriate.
When installing this product, it is appropriate to use Unshielded (UTP) cabling if the cable run installation meets the following
requirements:
The cable is not bundled with other cables
The cable is run loosely with other Category cables
The cable is not placed close to sources of interference such as power lines and radios
The cable is not looped or coiled
When installing this product, Foiled (FTP) or Shielded (STP) cabling must be used if the cable run installation requires the following cable
run installation:
The cable is bundled with other cables
The cable is run tight against other Category cables
The cable is placed near sources of interference like power lines and radios
The cable is looped or coiled
NOTE: For best performance, install the USB 3.1 Extender using Shielded or Foiled CAT6a/7 cable.
3.2 REQUIREMENTS FOR INSTALLING THE EXTENDER
To complete the installation, you will also require the following items that are not included with this system:
USB compatible computer (host computer) with a USB compliant operating system
USB compatible device(s)
CAT6a/7 Unshielded Twisted Pair (UTP) cable with two RJ-45 connectors (if using surface cabling), or CAT6a/7 cabling with two
information outlets and two CAT6a/7 patch cords with RJ-45 connectors (if using premise cabling), ensuring the total cable length
does not exceed 328 feet (100 meters).
Host
USB Cable
Optional
Network
Connections
Optional
Network
Connections
USB Devices
Local Extender Remote Extender
USB 3-2-1
up to 100m over CAT 6a/7
LAN
IP Control
FIGURE 3-1. TYPICAL INSTALLATION

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CH APTE R 3: INSTALL ATION
3.3 PREPARING YOUR SITE
Before installing the USB 3.1 Extender, you will need to prepare your site:
1. Place the computer where desired and set it up.
2. Locate your USB device(s) within the cable-length of the computer. If not, adjust the location of your device(s) and/or computer
accordingly.
NOTE: If you are using surface cabling, the USB 3.1 Extender supports a maximum distance of 328 feet (100 meters). Install the CAT6a/7
cabling as desired and terminate it with the appropriate RJ-45 ends. If using premise cabling, (in-building network infrastructure),
ensure your cabling is installed between the two locations and does not exceed 328 feet (100 meters) and that it meets the
CAT6a/7 specification.
Cable installation is important, particularly if high throughput applications are used. When installing, ensure the cable is installed away
from, or isolated from potential sources of interference such as electrical wiring, fluorescent lighting, etc.
NOTE: When terminating cables, ensure the matching RJ-45 connector is used for the cable type. For example, if CAT6a cable is used,
then CAT6a compatible RJ-45 connectors must be used. Otherwise, the benefits of using higher-grade cabling may not be
realized.
3.4 INSTALLING THE LOCAL EXTENDER
1. Place the Local Extender near the computer.
2. Assemble the power adapter and country specific power cord together and connect them into a suitable AC outlet.
3. Connect the supplied USB 3.1 Gen cable between the Local Extender host port and a USB 3 port on the host computer.
3.5 CONNECTING THE LOCAL EXTENDER TO THE REMOTE EXTENDER
With Surface Cabling:
1. Plug one end of the CAT 6a/7 cable (not included) into the Link port on the Local Extender.
2. Plug the other end of the CAT 6a/7 cable into the Link port on the Remote Extender.
With Premise Cabling:
1. Plug one end of a CAT 6a/7 patch cord (not included) into the Link port on the Local Extender.
2. Plug the other end of the patch cord into the CAT 6a/7 information outlet near the host computer.
3. Plug one end of the second CAT 6a/7 patch cord (not included) into the Link port on the Remote Extender.
4. Plug the other end of the patch cord into the CAT 6a/7 information outlet near the USB device.
NOTE: Do not exceed more than 32.8 feet (10 meters) total of patch cable when using premise cabling.
3.6 INSTALLING THE REMOTE EXTENDER
1. Place the Remote Extender near the USB device(s).
2. Assemble the power adapter and country-specific power cord together and connect them into a suitable AC outlet.
3. Connect the power adapter to the Remote Extender.

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CH APTE R 3: INSTALL ATION
3.7 CHECKING THE INSTALLATION
1. On the Local and Remote Extenders, check that the Power, Status, Link, USB 2 and USB 3 LEDs are on. If the Link LEDs are permanently
off, then the cabling between the Local and Remote Extender may not be installed properly or is defective.
2. For Windows users (XP, 7, 8, 8.1, 10), open Device Manager to confirm that the extender system has been installed correctly. Expand
the entry for Universal Serial Bus controllers by clicking the “+” sign. If the extender system has been installed correctly, you should find
two separate instances of “Generic SuperSpeed USB Hub” listed.
NOTE: To open Device Manager in Windows XP: Right click “My Computer” then select: Properties >> Hardware tab >> Device Manager
NOTE: To open Device Manager in Windows 7: Open the Start Menu, right click on “Computer” then select: Manage >> Device Manager
NOTE: To open Device Manager in Windows 8, 8.1 or 10: Right click the Start Menu and then select: Device Manager
3. 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 extender has been installed correctly, you should find it listed as two
separate instances of “Hub” under the USB SuperSpeed Bus.
NOTE: To open System Profiler in macOS: Open the Finder, select Applications, then open the Utilities folder and double click on the
System Profiler icon.
4. If the extender system is not detected correctly or fails to detect, please consult the Troubleshooting section in this guide.
3.8 CONNECTING A USB DEVICE
1. Install any software required to operate the USB device. Refer to the documentation for the USB device, as required.
2. Connect the USB device to the device port on the Remote Extender.
3. Check that the device is detected and installed properly in the operating system.
3.9 COMPATIBILITY
The USB 3.1 Extender complies with USB 2.0 and USB 3.1 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.

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CH APTE R 3: INSTALL ATION
3.10 OPTIONAL ETHERNET PASSTHROUGH CONNECTION
The Extender offers 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 Remote Extender
Leveraging existing cabling to provide USB 3-2-1 connectivity without losing network connectivity
Local Extender Remote Extender
Network Device
Up to 100m over CAT 6a/7
Up to 100m
over CAT 6a/7
Up to 100m
over CAT 6a/7
LAN
FIGURE 3-2. ETHERNET PASSTHROUGH APPLICATION
Connect any network device or access port into the RJ-45 socket label “LAN” using up to 328 feet (100 meters) of standard CAT5e, 6 or 7
cabling.

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CHAPTER 4: MOUNTING OPTIONS
The bottom of the enclosure features four convenient pre-drilled holes for optional mounting. Based on your requirements, choose from
two available mounting options:
1. USB Extender Mounting Kit (Purchased separately order USB Mounting Kit - Black (part number IC400MK)
2. USB Extender Direct Surface Mounting (Using your own hardware, stencil provided)
4.1 OPTION 1: USB EXTENDER MOUNTING KIT
Contents:
(2) mounting brackets
(4) M3 locking washers
(4) M3 x 10-mm Phillips screws
(1) Mounting bracket installation guide (see diagram)
NOTE: One kit is required to mount per Local Extender or Remote Extender
Using a Phillips screwdriver, in the order as illustrated below, fasten and secure the provided screws, locking washers and brackets into
place.
FIGURE 4-1. MOUNTING KIT
Once the bracket mounting is secured onto the extender, it is ready for mounting onto a surface.
NOTE: You will need to provide your own screws to secure the extender using the available slots on each bracket.

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CHAPTER 4: MOUNTING OPTIONS
4.2 OPTION 2: USB EXTENDER DIRECT SURFACE MOUNTING (USING YOUR OWN HARDWARE)
The bottom of the enclosure features four pre-drilled holes for optional surface mounting.
Mounting hole
FIGURE 4-2. DIRECT SURFACE MOUNTING
1. Mark the center point of each of the four holes on your mounting surface by directly measuring.
2. Hardware recommendation: M3 locking washers and M3 screws (4 of each per extender), noting screw length will depend upon
thickness of mounting surface.
3. Drill through each of the four-hole markings on the mounting surface using a 3.97-mm (5/32”) drill bit.
4. Align the bottom enclosure holes to the newly drilled-out holes on the mounting surface.
5. Place a locking washer on each of the four screws and using a screwdriver, and fasten the extender into place.
NOTE: Do not exceed a screw depth of 10-mm (0.4”) into the unit or damage may occur.

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CHAPTER 4: MOUNTING OPTIONS
205.5mm (8.0905”)
42.0mm
(3.0315”)
4.0mm (5/32”) in 4 places
FIGURE 4-3. DIRECT SURFACE MOUNTING MEASUREMENT STENCIL

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5.1 TROUBLESHOOTING TIPS
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, contact Black Box Technical Support
at 877-877-2269 or [e-mail] for further assistance.
TABLE 5-1. TROUBLESHOOTING TIPS
PROBLEM CAUSE SOLUTION
ALL LEDs are OFF on the Local and/or
Remote Extender.
The Local Extender and/or Remote
Extender is not receiving power
from the AC power adapter.
1. Ensure that the AC power adapter is properly connected to
the Local Extender and/or Remote Extender.
2. Check that the AC adapter is connected to a live source of
AC power. Check that the Local and/or Remote Extender’s
Power LED is illuminated.
POWER LED is ON, STATUS LED is OFF. The unit has malfunctioned and requires
re-programming.
Contact Black BoxTechnical Support at 877-877-2269
or inf[email protected] for assistance.
The Link LEDs on the Local and Remote
Extenders are OFF.
There is no connection between the
Local and Remote Extenders.
1. Ensure that no more than 328 ft. (100 m) of CAT6a/7
cabling is connected between the Local and Remote
Extenders.
2. Connect a short patch cable between the Local and
Remote Extenders. Recheck the link status. If the LINK LED
is now SOLID ON, the previous cable is defective or not
capable of supporting the link.
The LINK LEDs on the Local and Remote
Extenders are SOLID ON, but the USB 2
and USB 3 LEDs are OFF.
1. The host computer is not powered on.
2. The Local Extender is not connected
to a computer.
3. The host computer does not support
USB Hubs.
4. The unit is malfunctioning.
1. Disconnect all USB devices from the Remote Extender.
2. Disconnect the Local Extender from the host computer.
3. Disconnect the AC adapters from the Local and Remote
Extenders.
4. Reconnect the Local Extender to the host computer.
5. Reconnect the AC adapters to the Local and Remote
Extenders.
6. Check that the Local and Remote Extenders have
enumerated as USB hubs in Windows Device Manager,
macOS System Profiler or using “Isusb” command in a
Linux Terminal.
7. Contact Black Box Technical Support at 877-877-2269
or inf[email protected] for assistance.
The USB 2 LED is SOLID ON, but the USB 3
LED is OFF.
1. The Local Extender is not connected
to a USB 3 port.
2. The Local Extender is connected to
the host using a USB 2 cable.
3. The USB 3 cable connecting the
Local Extender to the host computer
is defective.
4. The host computer’s USB 3 controller
has malfunctioned.
1. Ensure that the Local Extender is connected to a USB 3
port on the host computer.
2. Ensure that the included USB 3.1 Gen 1 cable is being used
between the host computer and Local Extender.
3. Cold boot the host computer.
4. Replace the USB 3.1 Gen 1 cable with a different cable.
5. Contact Black BoxTechnical Support at 877-877-2269
or inf[email protected] for assistance.
CHAPTER 5: TROUBLESHOOTING

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CHAPTER 5: TROUBLESHOOTING
TABLE 5-1 (CONTINUED). TROUBLESHOOTING TIPS
PROBLEM CAUSE SOLUTION
A USB 3 device is not enumerating as USB
3, or the operating system is notifying the
user that the device can “Perform Faster if
connected to a USB 3 port”.
1. The USB device is malfunctioning.
2. The computer does not recognize the
USB device.
3. The application software for the USB
device is not operating.
4. The USB 3 port on the computer is
malfunctioning.
5. The USB extender is malfunctioning.
1. Disconnect the extender from the computer.
2. Connect the USB 3 device directly to the host computer.
3. If the device does not operate as expected as a USB 3
device, consult the user documentation for that device or
try a different USB port on the host computer.
4. Update the host computer BIOS, chipset or USB controller
drivers from the manufacturer’s website.
5. If the device operates as USB 3 device when directly
connected to the computer, connect another USB 3 device
to the extender and reconnect it to the host computer.
6. If the second device does not operate as a USB 3 device,
the extender may be malfunctioning. Contact Black Box
Technical Support at 877-877-2269 or [e-mail]
for assistance.
7. If the second device operates as a USB 3 device as expected,
the first device may not be compatible with this extender.
Contact Black Box Technical Support at 877-877-2269 or
inf[email protected] for assistance.
All LEDs are flashing and the system is
operational.
Unit is or was operating at an unsafe
temperature.
1. Check ambient temperature. Ensure temperature does not
exceed 122° F (50° C).
2. Power cycle the unit to remove LED status.
All LEDs are flashing and the system
is NOT operational.
Unit has exceeded a safe operating
temperature.
1. Remove external sources of heat or change location
of the unit.
2. 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.

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CHAPTER 5: TROUBLESHOOTING
5.2 CONTACTING TECHNICAL SUPPORT
If you are experiencing problems not referenced in the Troubleshooting Guide, contact Black Box Technical Support
at 877-877-2269 or [e-mail] for assistance and provide them with the following information:
Host computer make and mode
Type of operating system installed (e.g. Windows 10, macOS 10.12, etc.)
Part number and serial number of both the Local Extender and Remote Extender unit
Make and model of any USB device(s) attached to the product
Description of the installation
Description of the problem

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APPENDIX A: REGULATORY INFORMATION
A.1 FCC RADIO FREQUENCY INTERFERENCE STATEMENT WARNING
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference received including interference that may cause undesired
operation.
A.2 CE STATEMENT
We, Black Box Corporation, declare under our sole responsibility that the USB 2.0 ICU504A, to which this declaration relates, is in
conformity with European Standard EN 55022, EN 55024, EN55032 and EN 61000.
A.3 IC STATEMENT
This Class A digital apparatus complies with Canadian ICES-003 Issue 6.
A.4 WEEE STATEMENT
The European Union has established regulations for the collection and recycling of all waste electrical and electronic equipment (WEEE).
Implementation of WEEE regulations may vary slightly by individual EU member states. Check with your local and state government
guidelines for safe disposal and recycling or contact your national WEEE recycling agency for more information.