Copyright © 2010 Future Technology Devices International Limited

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Document Reference No.: FT_000131

USB-COM422-PLUS1 Datasheet

Version 1.1

Clearance No.: FTDI# 94

5) Wait while the driver is found, downloaded, and installed. This step may take a couple minutes

base on the Internet speed.

6) After the files are found and installed, click “Finish” to complete the installation.

Figure 2.4 Complete Hardware Installation

7) Steps 2 through 6 will repeat. The first time installs the basic USB Serial Converter in the USB

device tree. The second time installs the Virtual COM Port layer in the Ports tree and assigns the

COM port number.

8) When both portions of the device driver have been installed successfully, the following message

will appear, indicating that the device is ready.

Figure 2.5 Hardware Ready

COM Port Assignment

Next, to determine which COM port has been assigned, open the Windows Device Manager from the

System Control Panel.

Figure 2.6 Device Manager

Click on the Plus “+” sign next to the Ports tree to list the available COM port. You will see “USB Serial

Port”, followed by a COMn assignment. In the figure below, the USB-COM422-Plus1 is assigned to COM3.