StarTech.com ICUSB2321F User manual

Manual Revision: 04/17/2012
For the most up-to-date information, please visit: www.startech.com
DE: Bedienungsanleitung - de.startech.com
FR: Guide de l'utilisateur - fr.startech.com
ES: Guía del usuario - es.startech.com
IT: Guida per l'uso - it.startech.com
NL: Gebruiksaanwijzing - nl.startech.com
PT: Guia do usuário - pt.startech.com
ICUSB2321F
ICUSB2322F
1/2 Port FTDI USB to Serial RS232
Adapter Cable with COM Retention
*ICUSB2322F
*ICUSB2321F

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 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 o 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 dierent from that to which the receiver
is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Use ofTrademarks, 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.

Instruction Manual
i
Table of Contents
Introduction............................................................................................1
Packaging Contents ................................................................................................................................. 1
System Requirements.............................................................................................................................. 1
ICUSB2321F Front View.........................................................................2
ICUSB2322F Front View.........................................................................2
Installation ..............................................................................................3
Hardware Installation .............................................................................................................................. 3
Verifying Installation................................................................................................................................ 4
Pinout.......................................................................................................4
Specications..........................................................................................5
Technical Support ..................................................................................6
Warranty Information............................................................................6

Instruction Manual
1
Introduction
The ICUSB2322F/ICUSB2321F 2-Port USB to Serial RS232 Adapter Cable with FTDI
chipset and COM Retention converts an available USB 1.1 or 2.0 port into 2 RS232 serial
DB9 ports to connect, monitor and control your serial devices.
This compact adapter features COM retention, allowing the same COM port values to
automatically be re-assigned to the port if the cable is disconnected and re-connected
to the host computer, or if the system is rebooted. Unlike most USB-serial adapters,
this one uses the FTDI chipset, which supports additional customization, advanced
features, and compatibility not necessarily oered by other solutions.
This USB-serial adapter is compatible with a broad list of Operating Systems, including
Windows®, Windows CE, Mac OS and Linux, making this product the perfect solution
for integrating into mixed environments.
Backed by a StarTech.com 2-year warranty and free lifetime technical support.
Packaging Contents
• 1x Driver CD
• 1x Instruction Manual
• 1x USB to RS-232 Serial Adapter
• 1x Wall Mounting Kit (ICUSB2322F only)
System Requirements
• USB enabled computer system with available USB port
• Windows® 7 (32/64bit)/ 8 (32/64bit)/ Vista(32/64)/ XP(32/64)/ 2000/ CE(4.2+)
Windows® Server 2008 R2/ 2003(32/64) Mac OS 9.x, 10.x Linux
*actual product may vary from photos

Instruction Manual
2
ICUSB2321F Front View
ICUSB2322F Front View
USB Type A
connector
DB9 Serial
connectors
Power
LED
DB9 Serial
connector
USB
connector

Instruction Manual
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 R2/8
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.

Instruction Manual
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. An additional COM port should be
visible. The port is sequentially numbered automatically by Windows. The port is ready
to connect to new devices.
Pinout

Instruction Manual
5
Specications
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)/ 8 (32/64bit), Windows CE 4.2+,
Mac OS 9.x/10/x, Linux

Instruction Manual
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.
For the latest drivers/software, please visit www.startech.com/downloads
Warranty Information
This product is backed by a two 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
ocers, directors, employees or agents) for any damages (whether direct or indirect,
special, punitive, incidental, consequential, or otherwise), loss of prots, 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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