StarTech.com ICUSB2321F Quick Start Manual

1/2 Port FTDI USB to Serial RS232 Adapter Cable with COM Retention
Product ID
ICUSB2321F
ICUSB2322F
*ICUSB2321F
Package Contents
• 1x Instruction Manual
• 1x USB to RS-232 Serial Adapter
• 1x Wall Mounting Kit (ICUSB2322F only)
Requirements
• USB Type-A Enabled Computer x 1
• Windows® CE (4.2, 5.0, 6.0), XP Embedded, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10, 11
• Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016, 2019, 2022
• macOS 10.6 to 10.15, 11.0, 12.0, 13.0, 14.0, 15.0
• Linux Kernel 3.0.x and up - LTS Versions only
To view manuals, FAQs, videos, drivers, downloads, technical drawings, and more, visit www.startech.com/support.
Pinout Diagram
*ICUSB2322F
Installation
Install the Driver and Adapter
Note: Drivers should install automatically in most supported operating systems. If
they do not, please complete the following steps:
1. Navigate to:
www.StarTech.com/ICUSB2321F
www.StarTech.com/ICUSB2322F
2. Click the Drivers/Downloads tab.
*Product may vary from image
3. Under Driver(s), download the appropriate Driver Package for your operating
system.
Windows
1. Right-click the downloaded file and extract the contents with Extract All.
2. Browse the Windows folder and run the Setup file.
3. Follow the on-screen instructions to complete the installation.
4. Connect the USB to Serial Adapter to an available USB-A port.
macOS
1. Double-click the downloaded file.
2. Open the folder that matches your macOS Version and run the Installer file inside
the folder.
3. Follow the on-screen instructions to complete the installation.
4. Connect the USB to Serial Adapter to an available USB-A port.
Quick-Start Guide
Pin RS-232
1 DCD
2 RXD
3 TXD
4
DTR
5
GND
6 DSR
7 RTS
8 CTS
Manual Revision: March 21, 2025