User Manual

Quick-start guide
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Manual Revision: 10/15/2020
For the latest information, technical specications, and support for
this product, please visit www.StarTech.com/ICUSB232PROC.
Package contents
• 1 x serial adapter cable
• 1 x quick-start guide
ICUSB232PROC
USB-C™ to RS232 Serial DB9 Adapter Cable with COM Retention
Pin 1 DCD
Pin 2 RXD
Pin 3 TXD
Pin 4 DTR
Pin 5 GND
Pin 6 DSR
Pin 7 RTS
Pin 8 CTS
Pin 9 RI
RS-232 DB9 male pinout
1
5
6
9
Requirements
• USB Type-C™ port
Requirement are subject to change. For the latest requirements,
please visit www.StarTech.com/ICUSB232PROC.
Product diagram
USB-C connector DB9M RS232 connector
Install the adapter cable
Windows
1. In a web browser, navigate to www.StarTech.com/ICUSB232PROC.
2. Click the Support tab.
3. Under Driver(s), download the [Prolic_PL2303] Windows USB
Serial Adapter.zip le.
4. Right-click the folder that you downloaded and click Extract All.
5. Right-click the Setup.exe le and click Run as Administrator.
6. Follow the on-screen instructions to complete the installation.
7. When prompted, restart your computer.
8. Connect the serial adapter cable to a USB port.
About COM retention
The USB to serial adapter features COM retention (also known as
COM port retention). With COM retention, the COM port settings
that are assigned the rst time that the adapter is connected to a
computer are retained, regardless of the USB port that the adapter
cable is connected to. When you disconnect the serial adapter cable
and plug it into a dierent USB port on the same computer, you
don’t need to recongure the serial port.