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Instruction Manual

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

Manual Revision: 11/15/2019

For the most up-to-date information, please visit: www.startech.com

Packaging Contents

•  1 x USB to Serial Adapter Cable

•  2 x Cable Nut

•  1 x Instruction Manual

System Requirements

•  USB enabled computer system with available USB port

•  Windows® 8 (32/64bit), 7 (32/64), Vista (32/64), XP(32/64), 2000, 

ME, 98SE, CE 4.2, 5.2; Windows® Server 2008 R2, 2003(32/64); Mac 

OS 10.1, 10.4– 10.8; Linux 2.4.x – 3.9.x

ICUSB232SM3

3ft USB to RS232 Serial DB9 Adapter

Installation

Windows

1.  Open a web browser and go to www.startech.com/downloads.

2.  Enter your product ID (ICUSB232SM3) and click Search.

3.  Select the product from the search results, and download the 

available Prolific_PL2303.zip file.

4.  Once downloaded, right-click the zip file and extract the contents.

5.  Browse to the Windows folder and run the PL2303_Prolific_

DriverInstaller application, following the on-screen instructions to 

complete the install.

6.  Connect the USB Serial cable to an available USB port.

Mac OS

1.  Open a web browser and go to www.startech.com/downloads.

2.  Enter your product ID (ICUSB232SM3) and click Search.

3.  Select the product from the search results, and download the 

available Prolific_PL2303.zip file.

4.  Once downloaded, double-click the zip file to extract the 

contents.

5.  Browse to the Mac folder and choose the appropriate folder for 

the version you are running.

6.  Run PL2303_x.dmg application and follow the on-screen 

instructions to complete the install.

7.  Connect the USB Serial cable to an available USB port.

Verifying Installation

Windows

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.

*actual product may vary from photos

Double-click on the “Ports (COM & LPT)” option. An additional COM 

port should be listed.

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