USB Serial Adapter
1/2-Port USB to Serial RS232
Adapter Cable
with COM Retention
ICUSB2321F
ICUSB2322F
Instruction Manual
Manual Revision:01/19/2011
For the most up-to-date information, please visit www.startech.com
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
reasonable protection against harmful interference in a residential installation. This
equipment 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
communications. However, there is no guarantee that interference will not occur in a
particular 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
endorsement 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 document, 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.
i
Table of Contents
Introduction .................................................................1
Packaging Contents .............................................................................. 1
System Requirements .......................................................................... 1
ICUSB2321F View ................................................................................ 2
ICUSB2322F View ................................................................................ 2
Installation ...................................................................3
Hardware Installation ............................................................................3
Verifying Installation .............................................................................. 4
Pinout...........................................................................4
Specifications ..............................................................5
Technical Support .......................................................6
Warranty Information ..................................................6
1
Introduction
This 1 or 2 Port USB to Serial RS232 Adapter Cable with COM Retention
converts an available USB 1.1 or 2.0 port into an RS232 serial DB9 port to
connect, monitor and control your serial devices.
This compact adapter features COM retention, allowing the same COM
port value to automatically be re-assigned to the port if the device is
disconnected and re-connected to the host computer, or if the system is
rebooted.
Compatibility with a broad list of Operating Systems including Windows®,
Windows® CE, Mac OS and Linux, makes this product easy to integrate into
mixed environments.
Packaging Contents
• 1 x USB to Serial Adapter
• 1 x Wall Mounting Bracket (ICUSB2322F only)
• 1 x Driver CD
• 1 x Instruction Manual
System Requirements
• USB enabled computer system with available USB port
• Microsoft® Windows® 2000/XP/Vista/Server 2003/Server 2008 R2/7
(32/64-bit), Windows CE 4.2 or later, or Apple® Mac OS® 9.x/10.x,
or Linux
®
2
ICUSB2321F View
ICUSB2322F View
*actual product may vary from photos
3
Installation
Hardware Installation
Windows 2000/XP/Server 2003
1. Plug the USB adapter into an available USB port on the computer.
2. When the Found New Hardware wizard appears on the screen, insert
the Driver CD into your CD/DVD drive. If you are prompted to connect to
Windows Update, please select the “No, not this time” option and click
Next.
3. Select the option “Install Drivers Automatically (Recommended)” and then
click the Next button.
4. Windows should now start searching for the drivers and install them
automatically. Once this has completed, click the Finish button.
5. If Windows is unable to locate drivers, press the “Back” button or restart
the wizard and select the advanced option to have it search the “USB_to_
IO\FTDI” location on the CD.
Windows Vista/7/Server 2008 R2
1. Plug the USB adapter into an available USB port on the computer.
2. When the Found New Hardware window appears on the screen, click
on the “Locate and install drivers software (recommended)” option. If
prompted to search online, select the “Don’t search online” option.
3. When prompted to insert the disc, insert the Driver CD that came with the
card, into your CD/DVD drive and Windows will automatically proceed to
search the CD.
4. If a Windows Security dialog window appears, click the “Install this driver
software anyway” option to proceed.
5. Once the driver is installed, click the Close button.
6. If Windows is unable to locate drivers, press the “Back” button or restart
the wizard and select the option to “Browse the computer” and have it
search the “USB_to_IO\FTDI” location on the CD.
4
Verifying Installation
From the main desktop, right-click on “My Computer” (“Computer” in Vista/7),
then select Manage. In the new Computer Management window, select
Device Manager from the left window panel.
Double-click on the “Ports (COM & LPT)” option. Additional COM port(s)
should be visible. The port is automatically sequentially numbered by
Windows, but can be changed through the “Properties”. The port is ready to
connect to new devices.
Pinout
5
Specications
ICUSB2321F ICUSB2322F
Number of Ports
1 2
Host Interface
USB 2.0
Chipset ID
FTDI FT232R FTDI FT2232D
Connectors
1 x USB type A male
1 x 9-pin DB9 male
1 x USB type A male
2 x 9-pin DB9 male
LEDs
N/A
Supported Protocols
RS232
Data Bits
7, 8
Stop Bits
1, 2
Parity
None, Odd, Even, Mark, Space
Maximum Data Transfer
Rate
115.2 Kbps 921.6 Kbps
Operating Temperature
0°C ~ 55°C (32°F ~ 131°F)
Storage Temperature
-20°C ~ 85°C (32°F ~ 185°F)
Humidity
5 ~ 95% RH
Cable Length
1.83m / 6ft 2.14m / 7ft
Dimensions
45.0mm x 41.5mm x
22.0mm
N/A
Weight
200g 300g
Compatible Operating
Systems
Windows 2000/XP/Server 2003/Vista/Server 2008
R2/7 (32/64-bit), Windows CE 4.2+,
Mac OS 9.x/10/x, Linux
6
Technical Support
StarTech.com’s lifetime technical support is an integral part of our
commitment 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
materials 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.
StarTech.com has been making “hard-to-find easy” since 1985,
providing high quality solutions to a diverse IT and A/V customer
base that spans many channels, including government, education
and industrial facilities to name just a few. We offer an unmatched
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Management solutions, serving a worldwide market through our
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Visit www.startech.com today for complete information about all
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