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StarTech.com ICUSB232DB25 USB to Serial Adapter - 3 ft / 1m - with DB9 to DB25 Pin Adapter - Prolific PL-2303 - USB to RS232 Adapter Cable
- Add an RS232 serial port to a notebook or desktop computer with this Plug-and Play USB adapter cable
- USB to Serial
- USB to RS232
- USB to DB25
- USB to Serial Adapter
- USB to Serial Port
- USB Powered
- Comes with a DB9 to DB25 Serial Adapter
- Intrigated 3 ft. cable
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Overview
Specs
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Add an RS232 serial port to a notebook or desktop computer with this Plug-and Pl
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): Lifetime
- Limited Warranty period (labor): Lifetime
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-800-265-1844
- Support Email: support@startech.com
- Support Website
- View other products from STARTECH
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The StarTech.com ICUSB232DB25 is a 3 ft USB-A-to-RS-232 serial adapter cable with a DB9 connector and included DB9-to-DB25 adapter, suited to users connecting legacy serial equipment—such as industrial sensors, barcode scanners, or modems—to a computer with USB.
Recommended For
- IT and field-service technicians who use a laptop to configure or troubleshoot RS-232 equipment such as switches, PLCs, or other serial devices, and need a USB-A connection with a DB9 port.
- Technicians or operators connecting legacy DB25 RS-232 equipment to a computer; the included DB9-to-DB25 adapter supports this connector setup.
- Retail, logistics, or lab staff who need to connect a compatible RS-232 barcode scanner, receipt printer, scale, or similar serial peripheral to a laptop or desktop.
- Users keeping older RS-232 peripherals in service who want a short, 3-foot USB-A adapter cable instead of a computer with a built-in serial port.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Adding an RS-232 serial connection to a laptop or desktop for compatible serial devices such as scanners, modems, sensors, and automotive diagnostic adapters |
| Serial Communication | RS-232 transfer up to 250 Kbps, with configurable 4–8 data bits, 1, 1.5, or 2 stop bits, five parity options, three flow-control options, and a 512-byte bidirectional FIFO buffer |
| Connectors And Cable | 3 ft USB-A male to DB9 male serial cable, with a DB9-to-DB25 pin adapter for 25-pin RS-232 connections; male-to-male connectors |
| USB Interface And Operation | USB 2.0 full-speed interface with transfer speeds up to 12 Mbps; plug-and-play and hot-swap support |
| Power And Compatibility | USB powered with no external power adapter required; supports remote wake-up from modem input signals and USB power management. Compatible with the listed Windows, Mac OS, Linux, Windows Embedded, Windows CE, Windows Mobile, and PocketPC versions |
| Chipset And Certification | Prolific PL-2303HXD chipset; Microsoft WHQL-certified drivers and EIA RS-232-C compliant |
| Environmental Limits | Operating temperature: 0–60°C; storage temperature: -20–80°C; humidity: 0–90% RH |
| Physical Details | Weight: 2.47 oz (70 g); RoHS compliant; 2-year limited warranty |
| Model Identifiers | StarTech.com ICUSB232DB25 |







