Quick-Start Guide
To view manuals, FAQs, videos, drivers, downloads, technical drawings, and more, visit www.startech.com/support.
Manual Revision: March 4, 2022
Product Diagram (1P3FP-USB-SERIAL)
Port/LED/
Connector
Function
1
Serial Port DB-9
• Connect
Serial Peripheral Devices
2
USB Type A Port
• Connect the
USB to Serial Adapter Cable
to a
Host
Computer
Pinout Diagram
3 ft. (1 m) USB-A to RS232 DB9 Serial Adapter Cable - M/M
Package Contents
• USB to Serial Adapter Cable x1
• Quick-Start Guide x1
Requirements
For the latest requirements, please visit
www.startech.com/1P3FP-USB-SERIAL
• Computer with an available USB Type A port
Installation
Install the Driver
1. Navigate to
www.startech.com/1P3FP-USB-SERIAL
2. Click the
Drivers/Downloads
tab.
3. Under
Driver(s)
, download the
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 Cable
to an available USB port.
macOS
1. Double-click the downloaded file.
2. Open the folder that matches your
macOS Version
and run the
Setup
file inside the
folder.
3. Follow the on-screen instructions to complete the installation.
4. Connect the
USB to Serial Adapter Cable
to an available USB port.
Verify Driver Installation (Windows)
1. Navigate to the
Device Manager
.
2. Under
Ports (COM & LPT)
, right-click
Prolific USB-to-Serial Comm Port
and click
Properties
.
1
2
