Copyright © 2010 Future Technology Devices International Limited

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Document Reference No.: FT_000135

USB-COM422-PLUS2 Datasheet

Version 1.2

Clearance No.: FTDI#103

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 and Universal Serial Bus controllers tree to list the

available USB device. You will see two additional “USB Serial Port”, followed by a COMn assignment.

And two additional “USB Serial Converter A” and “USB Serial Converter B”.