PL-2303 Driver Installer Manual
PL-2303 (Chip Rev H, HX, X) USB to Serial Adapter
Windows Driver Installer Manual
For Windows 2000/XP/Vista/7 Operating Systems
Driver Installer v1.4.17 Release
Features & Specifications
System Requirements
Installing the Device
Uninstalling the Device
The PL-2303 USB to Serial adapter is your smart and convenient accessory for
connecting RS-232 serial devices to your USB-equipped Windows host computer. It
provides a bridge connection with a standard DB 9-pin male serial port connector in
one end and a standard Type-A USB plug connector on the other end. You simply
attach the serial device onto the serial port of the cable and plug the USB connector
into your PC USB port. It allows a simple and easy way of adding serial connections
to your PC without having to go thru inserting a serial card and traditional port
This USB to Serial adapter is ideal for connecting modems, cellular phones, PDAs,
digital cameras, card readers and other serial devices to your computer. And since
USB does not require any IRQ resource, more devices can be attached to the system
without the previous hassles of device and resource conflicts.
Finally, the PL-2303 USB to Serial adapter is a fully USB Specification compliant
device and therefore supports advanced power management such as suspend and
resume operations as well as remote wakeup. The PL-2303 USB Serial cable adapter
is designed to work on all Windows operating systems.
PL-2303 USB to Serial Adapter Installation Manual
Features & Specifications
Smart USB to RS-232 (DB 9-pin male serial port) interface
Supports various serial devices like modems, PDAs, cellular phones, digital
cameras, card readers, and more.
Easy Plug and Play Installation
Full Compliance with the Universal Serial Bus Specification v1.1
Supports the standard RS-232 Serial Interface
Supports automatic handshake mode
Supports Remote Wake-up and Intelligent Power Management
Provides Dual Buffers for upstream and downstream data transfer
No IRQ resource required
Bus Powered – no separate power supply or battery required
System Requirements
Windows 2000, Windows XP, Windows Vista, or Windows 7 operating system
AMD or Intel Pentium 133MHz or better based computer
USB 1.1 or higher port
USB-to-Serial Cable Adapter
USB-to-Serial Driver Installer Program
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PL-2303 USB to Serial Adapter Installation Manual
Installing the Device with InstallShield
This section will guide you on how to install the PL-2303 USB to Serial adapter under
Windows 7, Windows Vista, Windows XP, and Windows 2000 operating systems. You
can download the latest Driver Installer program from Prolific support website.
Please take notice of the installation order. First, run the Driver Installer Program
before plugging in the USB to Serial adapter. If you already plug the device during
the driver installation, you need to replug the device again for Windows to
enumerate the device and load the drivers installed.
The following steps will show how to install the device under Windows 7 Ultimate SP1
(64-bit) OS. Basically, the procedures are somewhat the same for all Windows
operating systems versions.
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PL-2303 USB to Serial Adapter Installation Manual
Power on your computer and boot to Windows. Run or double-click the PL-2303
Driver Installer program.
The InstallShield Wizard will be displayed on your screen to inform you that the
PL-2303 USB-to-Serial driver will be installed on your computer. Click Next to
The PL-2303 Driver Installer program will then start to install the drivers needed.
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PL-2303 USB to Serial Adapter Installation Manual
Click the Finish button to close the InstallShield program. If you have plugged
the cable into the PC while running the setup installation, please unplug and
replug the cable for the system to detect the device.
Plug in the USB to Serial adapter to the PC USB port. Windows should detect the
driver as Prolific USB-to-Serial Comm Port. Go to Device Manager and check
for the “Prolific USB-to-Serial Comm Port” device and the COM port number
assigned by Windows.
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PL-2303 USB to Serial Adapter Installation Manual
You can also check the driver version by right-clicking on the “Prolific USB-toSerial Comm Port” device and select Properties and Driver tab.
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PL-2303 USB to Serial Adapter Installation Manual
Uninstalling the Device Driver
To uninstall the PL-2303 driver, follow the below steps:
Click Start – Control Panel – Uninstall a Program (Add or Remove Programs).
Look for the “PL-2303 USB-to-Serial” program and click the Uninstall (Remove)
InstallShield Wizard will then start the maintenance program and will prompt
you to choose if you want to modify, repair, or remove the driver. Click the
Remove button and click Next to begin the driver uninstall.
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PL-2303 USB to Serial Adapter Installation Manual
The InstallShield Wizard will prompt you to confirm to uninstall. Click Yes to
Wait for the InstallShield Wizard to complete the uninstall process. When
complete, click Finish to end the program. Wait for some few seconds until the
“PL-2303 USB-to-Serial” program is removed from the Control Panel Uninstall
(Add or Remove Programs) program list.
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PL-2303 USB to Serial Adapter Installation Manual
Information in this document is subject to change without notice. The manufacturer
does not make any representations or warranties (implied or otherwise) regarding
the accuracy and completeness of this document and shall in no event be liable for
any loss of profit or any other commercial damage, including but not limited to
special, incidental, consequential, or other damages.
No part of this document may be reproduced or transmitted in any form by any
means without the express written permission of the manufacturer.
All brand names and product names used in this document are trademarks or
registered trademarks of their respective holders.
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