StarTech.com ICUSB2328 User manual

USB to RS232 Adapter
ICUSB2328 Instruction Manual
Actual product may vary from photo
8 port USB to RS232 Adapter

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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.
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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
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Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Driver Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
DB9 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Instruction Manual
1
Thank you for purchasing a StarTech.com 8 port USB to Serial adapter. Now you can
add four Serial ports to your computer, using a simple USB connection - the ideal
solution for adding legacy serial devices to a system with few or no serial ports available.
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•Bus-powered operation – requires no external power adapter
Features
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System requirements:
•An available USB/USB 2.0 port
Package contents:
•1 x 8 Port Serial Adapter
This package should contain:
•Fully compliant with USB 1.1 specifications and compatible with USB 2.0
•Easy Plug-and-Play installation
•1 x 6’ USB cable
•1 x Instruction manual
•1 x Driver CD

Instruction Manual
2
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1. Insert the Driver CD that was included with ICUSB2328 into the CD/DVD-ROM drive
on the host computer.
3. Connect the type ‘A’ end of the USB cable into an available USB port on the host
computer, or an available USB port on a USB hub.
4. Optional: Connect a 5V DC power adapter to the power port on the rear panel of
ICUSB2324, if the serial devices that will be connected require more power than the
USB bus on the host computer can support.
5. Connect the 8-to-1 breakout cable (included) to the port provided on the front of the
adapter.
ICUSB2328 rear panel
USB type
‘B’
Driver Installation
2. Connect the Type-B end of the USB cable used in
step 1 to the USB type ‘B’ port on the rear panel of
ICUSB2324.
1. Once ICUSB2328 has been connected to the host computer, the operating system
will detect the connection and automatically launch the Add New Hardware Wizard.
When the Wizard appears, click Next.
2. At the next screen, select Search for the best driver for your device, and click
Next.
3. Select Specify a location and browse to the folder that
corresponds to the operating system that is installed on
the host computer, where E:\ is the designated
CD/DVD-ROM drive.
Windows XP, 2000, 2003 users:
E:\USB_to_IO\FTDI\Win2000_XP_2003
Windows 98/ME users:
E:\USB_to_IO\FTDI\Win98_ME
4. Click Next. Windows will begin copying the necessary files.
5. Click Finish when prompted, to complete the driver installation.
6. After installing the drivers, Windows will detect the new COM ports and begin to
initialize them. Your new COM ports, numbered sequentially following the existing
ports in your system, are now ready.

Instruction Manual
3
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General Specifications
Regulatory Certifications ROHS, FCC, CE
Connectors 1 - USB B Male
8 - DB9 Male (using 8-to-1 breakout cable)
Power Adapter 5V DC
Maximum Baud Rate 115 Kbps
OS Support Windows 98SE/ME/2000/XP/Vista/MAC OS 8.6 AND UP
Operating Temperature 0 to 55° C (32 to 13° F)
Operating Humidity 5 to 95% RH
DB9 Pin Assignments
Pin Signal
1DCD
2RXD
3TXD
4DTR
5GND
6DSR
7RTS
8CTS
9RI
1 5
69
DB9
(USB Adapter)
DB9
(Serial Device)
1 DCD 1 DCD
2 RXD 2 RXD
3 TXD 3 TXD
4 DTR 4 DTR
5 GND 5 GND
6 DSR 6 DSR
7 RTS 7 RTS
8 CTS 8 CTS

Instruction Manual
4
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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.
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This product is backed by a lifetime 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.
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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.

1 August 2007 (Rev. A)
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