ATEN US3344I User manual

US3344I
4 x 4 USB 3.2 Gen 1 Industrial
Hub Switch
User Manual

US3344I User Manual
ii
Compliance Statements
FEDERAL COMMUNICATIONS COMMISSION INTERFERENCE
STATEMENT
This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC ules. 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 his own expense.
The device complies with Part 15 of the FCC ules. 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.
FCC Caution
Any changes or modifications not expressly approved by the party responsible
for compliance could void the user's authority to operate this equipment.
Warning
Operation of this equipment in a residential environment could cause radio
interference.
Achtung
Der Gebrauch dieses Geräts in Wohnumgebung kann Funkstörungen
verursachen.
KCC Statement

US3344I User Manual
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Industr Canada Statement
This Class A digital apparatus complies with Canadian ICES-003.
RoHS
This product is oHS compliant.

US3344I User Manual
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User Information
Online Registration
Be sure to register your product at our online support center:
Telephone Support
For telephone support, call this number:
User Notice
All information, documentation, and specifications contained in this manual
are subject to change without prior notification by the manufacturer. The
manufacturer makes no representations or warranties, either expressed or
implied, with respect to the contents hereof and specifically disclaims any
warranties as to merchantability or fitness for any particular purpose. Any of
the manufacturer's software described in this manual is sold or licensed as is.
Should the programs prove defective following their purchase, the buyer (and
not the manufacturer, its distributor, or its dealer), assumes the entire cost of all
necessary servicing, repair and any incidental or consequential damages
resulting from any defect in the software.
The manufacturer of this system is not responsible for any radio and/or TV
interference caused by unauthorized modifications to this device. It is the
responsibility of the user to correct such interference.
The manufacturer is not responsible for any damage incurred in the operation
of this system if the correct operational voltage setting was not selected prior
to operation. PLEASE VE IFY THAT THE VOLTAGE SETTING IS
CO ECT BEFO E USE.
International http://eservice.aten.com
International 886-2-8692-6959
hina 86-400-810-0-810
Japan 81-3-5615-5811
Korea 82-2-467-6789
North America 1-888-999-ATEN ext 4988
1-949-428-1111

US3344I User Manual
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Product Information
For information about all ATEN products and how they can help you connect
without limits, visit ATEN on the Web or contact an ATEN Authorized
eseller. Visit ATEN on the Web for a list of locations and telephone numbers:
International http://www.aten.com
North America http://www.aten-usa.com

US3344I User Manual
vi
Package Contents
Check to make sure that all the components are in working order. If you
encounter any problem, please contact your dealer.
1 US3344I 4x4 USB 3.2 Gen 1 Industrial Hub Switch
2 USB 3.1 Gen 1 Type-B to Type-A cable 1.2M
2 USB 3.1 Gen 1 Type-B to Type-A cable 1.8M
1 remote port selector
1 mounting kit
1 terminal block adapter set (an S-422 / S-485 and a DC terminal block
adapter)
1 power adapter (sold separately from your closest ATEN dealer)
1 user instructions

US3344I User Manual
vii
Table of Contents
ompliance Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Online Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
User Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Package ontents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Table of ontents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .viii
onventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
1. Introduction
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
omponents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
. Hardware Setup
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
onnecting the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
RS-422 / RS-485 Terminal Block onnection. . . . . . . . . . . . . . . . . . . . . . . 8
3. Settings / Port Selection
DIP Switch Mode Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Firmware Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Port Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
RS-422 / RS-485 Port Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Appendix
Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
International . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
ATEN Standard Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

US3344I User Manual
viii
About this Manual
This user manual is provided to help you get the most from the US3344I unit.
It covers all aspects of installation, configuration, and operation. An overview
of the information found in the manual is provided below.
Chapter 1, Introduction introduces you to the 4x4 USB 3.1 Gen 1 Industrial
Hub Switch. Its purpose, features, and panel components are presented and
described.
Chapter , Hardware Setup describes the steps that are necessary to
quickly and safely set up your installation.
Chapter 3, Settings / Port Selection explains the DIP switch options of
the unit, port selection options, and serial commands of the unit.
Appendix provides a list of safety instructions and precautions, contact
information for ATEN technical support, product specifications, and other
technical information.
Note:
ead this manual thoroughly and follow the installation and operation
procedures carefully to prevent any damage to the unit or any connected
devices.
The product may be updated, with features and functions added, improved
or removed since the release of this manual. For an up-to-date user
manual, visit http://www.aten.com/global/en/

US3344I User Manual
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Conventions
This manual uses the following conventions:
Monospaced Indicates text that you should key in.
[ ] Indicates keys you should press. For example, [Enter] means to
press the Enter key. If keys need to be chorded, they appear
together in the same bracket with a plus sign between them:
[ trl+Alt].
1. Numbered lists represent procedures with sequential steps.
♦Bullet lists provide information, but do not involve sequential steps.
>Indicates selecting the option (on a menu or dialog box, for
example), that comes next. For example, Start > Run means to
open the Start menu, and then select Run.
Indicates critical information.

US3344I User Manual
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This Page Intentionally Left Blank

1
Chapter 1
Introduction
Overview
The US3344I is a 4-port USB3.2 Gen1 Industrial Switch that enables 4
computers to share and use USB3.1 Gen1 devices such as keyboard, mouse and
other peripheral devices. You can manually switch the focus to a particular
computer using the pushbutton on the switch, or have the focus automatically
switched based on detection of connected computers.
It eliminates the cost to implement the complicated redundant systems and
equipment for each computer. The US3344I chassis and rack mountable design
is suitable for any industrial environment. For extra convenience, it features an
external remote control port that can simplify cabling layout.
The US3344I allows for a neat and tidy installation –The USB cables are
bundled to save the extra cost of purchasing USB cables.

US3344I User Manual
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Features
Enables four computers to share USB peripheral up to four devices
Supports USB 3.2 Gen1 specification, maximum data transfer rates up to
5Gbps
Multiplatform support - Windows, Mac and Linux
LED indicators display port focus
Metal mechanical cassis with wall mountable designs
Supports aftermarket USB M2 screw locking cable
Supports port selection via remote controller or S-422/ S-485 link
through 5-pin terminal block
Hot pluggable
Supports DC 9-24V power input by terminal block
Supports Battery Charging V1.2 and over current protection
Power-on detection
The computer focus automatically switches to a newly plugged-in or
powered-on computer.
The computer focus automatically switches to port 1 when the focused
computer is unplugged or powered-off.

hapter 1. Introduction
3
Components
No. Component Description
1 USB Type-A
peripheral ports
onnect USB peripherals you wish to access from the
computer in your setup
2 port indicator
LEDs
The LEDs correspond to the ports. When a port is connected,
the corresponding LED will light.
3 RS-422 / RS-
485 LEDs
The LED of the selected serial command will light up.
No. Component Description
4 power input (D
jack)
onnects a power adapter to power the unit.
5 power input (D
terminal block)
onnects the terminals for the terminal block to power the
unit.
6 remote selector
jack
onnects with the remote port selector.

US3344I User Manual
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7 control DIP
switch
Adjust the switch for different operations / features.
8 RS-422 / RS-
485 serial
command input
(terminal block)
onnects to RS-422 / RS-485 serial command input for serial
commands.
9 USB Type-B
host port
onnect to host computers.
10 remote port
selector
When connected to the unit, click the button to switch to the
next port.
No. Component Description

5
Chapter
Hardware Setup
Mounting
Use the screws provided with the mounting kit to screw the mounting bracket
to the bottom of the unit ( efer to the drawings shown above).
Please review the safety information regarding the placement of this
device in Safety Instructions, page 15.

US3344I User Manual
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Rack Mounting
Screw the mounting bracket to any convenient location on the rack.
Wall Mounting
Use the mounting bracket’s center screw hole to mount the unit on a wall.

hapter 2. Hardware Setup
7
Connecting the Unit
Follow the steps below to connect the US3344I unit.
1. Plug the USB 3.2 Gen 1 Type-A end of the included USB cables into your
computers (up to 4 computers) and plug the USB 3.2 Gen 1 Type-B end of
the included USB cables into the back of the US3344I
2. Plug your USB peripheral devices into the USB type-A peripheral ports of
the US3344I.
3. Plug the remote port selector to the remote selector jack.
4. (Optional) Preparing S-422/ S-485 serial command port selector*:
a) Select a port selection serial signal ( S-422/ S-485) from the DIP
switch on the back side of US3344I.
b) Select serial terminal function from the DIP switch on the back side of
US3344I.
c) Insert the command wires to the RS-422/RS-485 terminal block
adapter according to the labeled sign of the chassis ( efer to RS-422 /
RS-485 Terminal Block Connection on page 8). Tighten the slot screws.
Plug the terminal block adapter to the serial command port.
Note: For S422 connection, the T +/- terminals of your selector system
must be connected to the +/- terminals of the terminal block, and
vice versa (e.g. T+ to +, T- to -).
1
3
5
4
2
RS-422/RS485
Front
Rear

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5. Prepare a power input by either:
a) Connecting the DC terminal block for power input**: Insert DC + and -
wires (9 to 24V DC) to the DC terminal block adapter according to
the labeled sign. Tighten the slot screws. Plug the terminal block
adapter to US3344I; Or
b) (Optional) Connecting a power adapter*** to the DC power input jack.
*You can connect both remote port selector and serial command port selectors
for port selection.
**If both power inputs are connected, power from the DC jack will be
prioritized.
***Available for purchase separately from your closest ATEN dealer (Part
No.: 0AD8-8012-33MG)
RS-4 / RS-485 Terminal Block Connection
For S-422 / S-485 connection, please connect the wires according to the
diagram below and the following table.
For S-422 / S-485 commands, please refer to RS-422 / RS-485 Port
Selection on page 13.
For S422 connection, the T +/- terminals of your selector system must be
connected to the +/- terminals of the terminal block, and vice versa (e.g. T+
to +, T- to -)
If you wish to have centralized control, you may utilize an ATEN Control Box
(e.g. 2A-485, VK2100) where it can issue serial commands to control the unit.
Please also connect the S-422 / S-485 interface according to the diagram
and table above.
Pin RS-4 (4-wire) RS-485 ( -wire)
1 GND GND
2 TxD - (A) -
3 TxD + (B) -
4 RxD + (B) Data + (A)
5 RxD - (A) Data - (B)

9
Chapter 3
Settings / Port Selection
DIP Switch Mode Selection
The unit comes with a DIP switch set to allow for mode selection.
The DIP switch set is shown in the picture below:
Slide the switches to determine the mode the unit is in. Please consult the table
below:
Switch Description Default
485 / 422 Select an interface (RS-485 or RS-4 ) for “Port
Selection”. Please see RS-422 / RS-485 Port
Selection on page 13.
485
POWER-ON
DETE TION
Turn this on for power-on detection function.
 The computer focus automatically switches to a
newly plugged-in or powered-on computer.
 The computer focus automatically switches to
port 1 when the focused computer is unplugged
or powered-off.
Note: This function is only supported by US3344I
using firmware version v1.1.103 or later.
OFF
Please review the safety information regarding the placement of this
device in Safety Instructions, page 15.

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TERMINAL If the unit is the last serial device, you can choose to
turn this function on. Turn the TERMINAL function
ON or OFF.
OFF
SERVI E Turn this on for firmware upgrade, please refer to
Firmware Upgrade on page 11.
OFF
Switch Description Default