StarTech.com USB to Serial Adapter Cable Quick-Start Guide

Quick guide from the manual

This guide provides instructions for the StarTech.com USB to Serial Adapter. The device is designed to connect serial peripheral devices to a computer via a USB-A port. Drivers typically install automatically, but manual installation steps are provided for Windows and macOS if necessary.

Package Contents and Requirements

• USB to Serial Adapter x 1
• DB9 Nuts x 2
• Quick-Start Guide x 1
• Requirements: USB Type-A enabled computer

Installation

Drivers should install automatically in most supported operating systems. If they do not, follow these steps:

1. Navigate to the StarTech.com support website for your specific product ID (1P3FFCB-USB-SERIAL or 1P10FFC-USB-SERIAL).
2. Click the Drivers/Downloads tab.
3. Download the appropriate Driver Package for your operating system.
4. Windows: Right-click the downloaded file, extract contents, run the Setup file, and follow on-screen instructions. Connect the adapter to a USB-A port.
5. macOS: Double-click the downloaded file, open the folder matching your macOS version, run the Installer file, and follow on-screen instructions. Connect the adapter to a USB-A port.

Pinout Diagram

The adapter features a 9-pin DB9 serial port. The pin mapping is as follows:

• 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

Verifying Driver Installation

To ensure the adapter is working correctly:

• Windows: Navigate to Device Manager, check Ports (COM & LPT), right-click COM Port, and select Properties to confirm the driver is installed.
• macOS: Navigate to System Information, expand the Hardware section, click USB, and confirm the COM Port appears in the list.

Regulatory and Warranty

This product complies with FCC Part 15 and Industry Canada ICES-003 standards. It is backed by a two-year warranty. For full warranty terms and conditions, visit the StarTech.com warranty website.