PL-2303 Driver Installer Manual
PL2303 USB-to-Serial Bridge Chip Family
Windows Driver Installer Manual
For Windows 2000/XP/Vista/7 Operating Systems
Windows Driver Installer v1.5.0 Release
Contents
Driver Version Information
System Requirements
Installing the Device
Uninstalling the Device
Disclaimer
Driver Version Information

Driver Installer & Build date: 1.5.0 (2011-10-21)

GUID: ECC3713C-08A4-40E3-95F1-7D0704F1CE5E

Windows 2000/XP/Server2003 (32 & 64-bit) WDM WHQL Driver: v2.1.27.185

Windows Vista/7/Server2008 (32 & 64-bit) WDF WHQL Driver: v3.4.25.218
System Requirements

Supports the following Windows OS Family:
- Windows 2000 SP4
- Windows XP SP2 and above (32 & 64 bit)
- Windows Server 2003 (32 & 64 bit)
- Windows Vista (32 & 64 bit)
- Windows 7 (32 & 64 bit)
- Windows Server 2008 / 2008 R2 (32 & 64 bit)

USB 1.1/2.0/3.0 Host Controller (USB Port)

USB Device using PL-2303H/HX/X version chips
- PL-2303HA (EOL)
- PL-2303HXA
- PL-2303HXD
- PL-2303XA (EOL)

USB Device using Prolific next-gen version chips (Codename EA/TA/TB)
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PL-2303 USB to Serial Adapter Installation Manual
Installing the Device with InstallShield
This section will guide you how to install the PL-2303 Windows Driver. You can
download the latest Driver Installer program from Prolific support website:
http://www.prolific.com.tw/eng/downloads.asp?ID=31
Note:
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 for Windows to enumerate the
device and load the drivers installed. If your device is embedded to the system, you
might need to restart the system to reload and install the driver.
The following steps will show how to install the device under Windows 7 (64-bit) OS
as this is the most inquired driver support received by Prolific. The procedures are
somewhat the same and straightforward for all other Windows operating systems
versions.
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PL-2303 USB to Serial Adapter Installation Manual
1.
Power on your computer and boot to Windows. Run or double-click the PL-2303
Driver Installer program.
2.
The InstallShield Wizard will be displayed to inform you that the PL-2303 USBto-Serial driver will be installed on your computer. Click Next to continue.
3.
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
4.
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.
5.
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
6.
You can also check the driver version by right-clicking on the “Prolific USB-toSerial Comm Port” device and select Properties and Driver tab.
Warning!!!
If you are encountering yellow mark (Error Code 10) for device in Device Manager, you need
to contact the cable vendor or manufacturer for Prolific genuine chip validity. Prolific does not
manufacture any end-user cable products and will not provide direct support to end-users.
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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:
1.
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)
button.
2.
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
3.
The InstallShield Wizard will prompt you to confirm to uninstall. Click Yes to
continue.
4.
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
Disclaimer
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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