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USB to RS-422 / RS-485 Adapter
Windows XP Installation Guide
1. Installing Via The Found New Hardware Wizard
If a device of the same type has been installed on your machine before and the drivers that are about to be
installed are different from those installed already, the original drivers need to be uninstalled. Please refer to
the Uninstalling instruction.
Download the latest available drivers from the FTDI web site and unzip them to a location on your PC.
If you are running Windows XP or Windows XP SP 1, temporarily disconnect your PC from the Internet.
This can be done by either removing the network cable from your PC or by disabling your network card by
going to the "Control Panel\Network and Dial Up Connections", right clicking on the appropriate connection
and selecting "Disable" from the menu. The connection can be re enabled after the installation is complete.
This is not necessary under Windows XP SP 2 if configured to ask before connecting to Windows Update.
Windows XP SP 2 can have the settings for Windows Update changed through "Control Panel\System"
then select the "Hardware" tab and click "Windows Update".
Connect the device to a spare USB port on your PC. If the device is based on the FT2232, the Microsoft
composite device driver is automatically loaded in the background. Once the composite driver has been
installed Windows Found New Hardware Wizard will launch. If there is no available Internet connection or
Windows XP SP 2 is configured to ask before connecting to Windows Update, the screen shown in Figure
2.1 is displayed. Select "No, not this time" from the options available and then click "Next" to proceed with
the installation. If there is an available Internet connection, Windows XP will silently connect to the Windows
Update website and install any suitable driver it finds for the device in preference to the driver manually
selected.
Figure 2.1
Select "Install from a list or specific location (Advanced)" as shown in Figure 2.2 below and then click
"Next".
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