StarTech.com ICUSB2321X User manual

ICUSB2321X
ICUSB2322X
ICUSB2324X
Professional USB to RS-232
Serial Adapter
Instruction Manual

FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide rea-
sonable protection against harmful interference in a residential installation. This equip-
ment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio com-
munications. However, there is no guarantee that interference will not occur in a particu-
lar installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.•
Increase the separation between the equipment and receiver.•
Connect the equipment into an outlet on a circuit different from that to which the receiver•
is connected.
Consult the dealer or an experienced radio/TV technician for help.•
Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols
This manual may make reference to trademarks, registered trademarks, and other
protected names and/or symbols of third-party companies not related in any way to
StarTech.com. Where they occur these references are for illustrative purposes only and
do not represent an endorsement of a product or service by StarTech.com, or an en-
dorsement of the product(s) to which this manual applies by the third-party company in
question. Regardless of any direct acknowledgement elsewhere in the body of this doc-
ument, StarTech.com hereby acknowledges that all trademarks, registered trademarks,
service marks, and other protected names and/or symbols contained in this manual and
related documents are the property of their respective holders.

Instruction Manual
i
Instruction Manual
Table of Contents
Introduction .................................................................... 1
Features ......................................................................................1
Package Contents .......................................................................1
Hardware Guide............................................................... 2
ICUSB2321X ...............................................................................2
ICUSB2322X ...............................................................................2
Front Panel ..............................................................................2
Rear Panel...............................................................................2
ICUSB2324X ...............................................................................3
Front Panel ..............................................................................3
Rear Panel...............................................................................3
Installation....................................................................... 4
Configuration .................................................................. 7
Specifications.................................................................. 13
Technical Support........................................................... 14
Warranty Information...................................................... 14

Instruction Manual
1
Introduction
Thank you for purchasing a StarTech.com Professional USB to RS-232
Serial Adapter. This innovative device offers a simple way to utilize serial
devices using a USB port, and stores settings that are unique to the
connected device in non-volatile memory (COM Port Retention), allowing
you to retain the desired settings regardless of the USB Port to which the
adapter is connected.
A cost-effective solution, ICUSB232xX is ideal for connecting a serial
modem, barcode scanner, PDA or any other device with serial sync to a
host computer USB port, saving the expense of having to upgrade the
peripheral device to USB compliance.
Features
Enables and disables enumerations•
COM port retention•
Offers customizable device names, for easier identification•
USB Powered - no power outlet required•
Provides dual buffers for upstream and downstream data transfer•
Supports automatic handshake mode•
Supports remote wake up and power management control•
Package Contents
1 X Driver CD•
1 X Instruction Manual•
1 X USB to RS-232 Serial Adapter•

Instruction Manual
2
Hardware Guide
ICUSB2321X
ICUSB2322X
Front Panel
Rear Panel
DB9 Male
Port
USB A
Female Port
DB9 Male
Port
USB B
Female Port
DC Power
Adapter Input
DC Terminal
Block Input

Instruction Manual
3
ICUSB2324X
Front Panel
Rear Panel
DB9 Male
Port
USB B
Female Port
DC Power
Adapter Input
DC Terminal
Block Input

Instruction Manual
4
Installation
Please note: In order to ensure successful installation, please install the
necessary software (included) on the intended host computer prior to
connecting ICUSB232xX to the host.
Insert the Driver CD into the CD or DVD-ROM drive on the host1.
computer.
Browse to, and execute the2. Setup.exe file.
When the installation process3.
launches, a welcome screen will
appear. Click Next to proceed.
You will be asked to select a4.
destination where the
Startech.com USB to Serial
Adapter will be installed. Please
click on Browse to manually
select a location, otherwise, leave
the default destination in place
and click Next.

Instruction Manual
5
Please wait while the necessary5.
drivers are copied and installed.
Once completed, a message6.
indicating that the drivers have
been successfully installed will
appear. Please click Finish to
conclude the software installation.
Once the necessary software has been installed, connect ICUSB232xX to
an available USB port on the host computer. Once connected, the operat-
ing system will notify you that it has Found New Hardware - StarTech.
com Adapter:

Instruction Manual
6
When the7. Add New
Hardware Wizard launches,
select Install the software
automatically and click Next.
The Wizard will begin installing8.
the software.
A window will appear indicating9.
that “the software you are
installing...has not passed
Windows Logo testing...”. Click
Continue Anyway to proceed.
Please note that this software has
been tested for performance and
reliability.

Instruction Manual
7
Once the software has been10.
installed, click Finish.
Repeat steps 7 - 10 as11.
necessary (dependent on
number of serial ports being
installed).
Once the installation has concluded, you will be able to configure the
ICUSB232xX as required.
Conguration
To configure ICUSB232xX:
Right-click on1. My Computer (Windows XP) or Computer (Vista™)
and select Manage to open the Computer Management window.
In the left pane of the1. Computer Management window, select Device
Manager, then in the right pane, click on Ports (COM & LPT).
Right-click on the newly added2.
serial port and select Properties.

Instruction Manual
8
From within the Properties window, the following tabs offer configuration
for ICUSB232XX functions:
General
This tab provides basic information
about the ICUSB232XX, as well as
its operating status. ICUSB232XX
operation can be disabled from here
using the drop-down box provided
under Device Usage.
Information
This tab provides further information
about ICUSB232XX including its
manufacturer, device name, product
ID, vendor ID, and Serial Number.

Instruction Manual
9
Configurations
This tab allows users to change the
name given to the ICUSB232xX
for easier reference, and also the
assigned port number. The new
name will take effect once a new
name is entered into the New Device
Name field, and the Apply button is
pressed. To change the port number,
enter the desired value in the space
provided and click OK.
Port Flag
This tab provides the following
checkboxes:
Low Latency:• Changes how
serial data is handled in order
to reduce latency (or delay)
Re-map Baud: this feature allows
some standard baud rates to be
remapped to customized baud
rates. When the application uses
one of the standard baud rates
that has been remapped, the driv-
er will generate the corresponding
custom baud rate instead
Ignore Flush:• Receipt of a
flush request indicates that the driver should flush the device cache or
discard that data in its internal buffer. The driver transfers any data
currently cached in the device or held in the driver’s internal buffers

Instruction Manual
10
before completing the flush request. This flush will be ignored when it is
checked
Fast Write:• When this checkbox is checked, the driver completes the
data write, even if data is stil buffered in the driver and the USB Serial
Device
Ignore Tx Purge:• The purge request can be used to cancel all read
and write requests and to delte all data from the read and write buffers.
When this box is checked, the driver will not purge the write buffer.
Test Port
This function can be used to
diagnose any suspected hardware
problems that may occur. To perform
a Loopback Test, pins 2 and 3 of the
DB9 connector need to be physically
connected to one another.
Test parameters can be set based
on individual requirements; once the
Baud Rate and Flow Control have
been adjusted accordingly using
the drop-down boxes provided, and
the physical connection between
pins 2 and 3 has been made, click
Begin Test. If the test is successful,
characters entered in the Enter the
Text to send box will appear in the Text
Read! box.
To view jumper pin configurations
used to perform the LoopBack Test,
click the LoopBack Wiring Diagram
button. Please note that a jumper
connection between pins 2 and 3
are required in order to perform the
LoopBack Test.

Instruction Manual
11
Port Status
This function allows users to view
the amount of data having been sent
and received through ICUSB232XX.
To log data flow status, select an
appropriate Poll Interval (the rate at
which data is collected), then click
on the Start Logging button.
Advanced
This tab allows user to Disable
Enumerations (checked by default)
and designate COM Port assign-
ment based on either the unique
serial number assigned to the
ICUSB232XX (default), or on the
physical USB port to which the
device has been connected. In order
for this assignment to take effect, the
computer must be rebooted.
COM Port Assignment Based on
Unit Serial Number will assign the
same COM Port address, regard-
less of the USB port to which the
ICUSB232XX is connected.
COM Port Assignment Based on Physical USB Ports is determined
by the USB port to which ICUSB232XX is connected. For example, if
ICUSB232XX is removed from one USB port and connected to another,
the COM Port assignment will change to the COM Port number given to
the latter port. Switching the connection back to the original USB port wil
retain the original COM Port address. Please note that the selection for

Instruction Manual
12
Based on Physical USB ports is only available for ICUSB2321X. As such,
if an ICUSB2322X or an ICUSB2324X is connected, the option of “Based
on Physical USB ports” is not visible/accessible.
Driver
This tab allows users to view Driver
Details (rev. etc.), update the Driver
file, Roll Back the installed Driver
to a previous state, or uninstall the
device software for ICUSB232XX.
Details
Provides further operating informa-
tion about ICUSB232XX.

Instruction Manual
13
Specications
Connectors
1 x USB type A (Male)
1 x RS-232 (DB9) (Male) (ICUSB2321X)
2 x RS-232 (DB9) (Male) (ICUSB2322X)
4 x RS-232 (DB9) (Male) (ICUSB2324X)
Maximum Data
Transfer Rate 230Kbps
OS Support Windows 2000, XP, Server 2000 and 2003. Limited
functionality with Windows NT 4 and Vista™
Regulatory
Certifications CE/FCC/RoHS
Product Weight 33.4 g (1.18 oz)
Product
Dimensions
ICUSB2321X: 35 x 13 x 420mm (W x H x L)
(1.38 x 0.51 x 16.54”)
ICUSB2322X: 80 x 23 x 113mm (W x H x L)
(3.15 x 0.91 x 4.45”)
ICUSB2324X: 118 x 25 x 165.2mm (W x H x L)
(4.65 x 0.98 x 6.5”)

Instruction Manual
14
Technical Support
StarTech.com’s lifetime technical support is an integral part of our commit-
ment to provide industry-leading solutions. If you ever need help with your
product, visit www.startech.com/support and access our comprehensive
selection of online tools, documentation, and downloads.
Warranty Information
This product is backed by a one year warranty.
In addition, StarTech.com warrants its products against defects in materi-
als and workmanship for the periods noted, following the initial date of
purchase. During this period, the products may be returned for repair,
or replacement with equivalent products at our discretion. The warranty
covers parts and labor costs only. StarTech.com does not warrant its
products from defects or damages arising from misuse, abuse, alteration,
or normal wear and tear.
Limitation of Liability
In no event shall the liability of StarTech.com Ltd. and StarTech.com USA
LLP (or their officers, directors, employees or agents) for any damages
(whether direct or indirect, special, punitive, incidental, consequential, or
otherwise), loss of profits, loss of business, or any pecuniary loss, arising
out of or related to the use of the product exceed the actual price paid
for the product. Some states do not allow the exclusion or limitation of
incidental or consequential damages. If such laws apply, the limitations or
exclusions contained in this statement may not apply to you.

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