---
product_id: 50461453
title: "Startech USB to RS232 DB9/DB25 Serial Adapter Cable - M/M"
brand: "startech.com"
price: "$43.81"
currency: USD
in_stock: true
reviews_count: 13
url: https://www.desertcart.us/products/50461453-startech-usb-to-rs232-db9-db25-serial-adapter-cable-m
store_origin: US
region: United States of America
---

# Max baud 230.4 Kbps Cross-platform compatibility 3ft cable length Startech USB to RS232 DB9/DB25 Serial Adapter Cable - M/M

**Brand:** startech.com
**Price:** $43.81
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect the Past to the Future!

## Quick Answers

- **What is this?** Startech USB to RS232 DB9/DB25 Serial Adapter Cable - M/M by startech.com
- **How much does it cost?** $43.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/50461453-startech-usb-to-rs232-db9-db25-serial-adapter-cable-m)

## Best For

- startech.com enthusiasts

## Why This Product

- Trusted startech.com brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Secure Connection:** Screw-lock nuts ensure a stable and reliable connection.
- • **Robust Compatibility:** Works flawlessly with Windows, macOS, and Linux.
- • **Seamless Connectivity:** Easily connect legacy devices to modern systems.
- • **High-Speed Performance:** Experience data transfer rates up to 230.4 Kbps.
- • **Versatile Applications:** Perfect for IT, industrial, and laboratory environments.

## Overview

The StarTech.com 3ft USB to Serial Cable is a versatile adapter that allows seamless connection of RS232 devices to modern computers. With a robust 3ft length and high-speed data transfer capabilities, it supports a wide range of applications from industrial automation to laboratory setups, ensuring compatibility across major operating systems.

## Description

Startech USB to RS232 DB9/DB25 Serial Adapter Cable - M/M

## Features

- USB TO SERIAL: Connect serial RS232 (DB9 or DB25) devices to a computer with this USB to serial adapter. Secure the cable using the screw-lock nuts located on the male serial DB9/DB25 connector; Reach peripherals with extended cable length 3ft (91cm)
- DEVICE COMPATIBILITY: Use this USB to RS232 serial adapter to reliably connect, configure, and monitor serial devices; Compatible with barcode readers / scanners, network switches, receipt printers, PLCs, medical devices, oscilloscopes, scales, etc.
- APPLICATIONS: This USB to serial cable is ideal for IT applications such as server rooms, industrial control/automation, logistics, POS, AV installations, laboratories, etc; Continue using legacy hardware with modern systems, using this USB to RS232 cable
- USB TO SERIAL ADAPTER SPECS: 3ft (91cm) Cable Length; Max Baud 230.4 Kbps; 512 Byte FIFO; Supports Windows, macOS, and Linux; Prolific PL2303GC Chipset; Odd/Even/Mark/Space/None Parity Modes; 4/5/6/7/8 Data Bits

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003WOWBBW |
| Best Sellers Rank | #432 in Serial Adapters #20,611 in Computer Cables & Interconnects |
| Customer Reviews | 4.4 4.4 out of 5 stars (408) |
| Date First Available | July 12, 2010 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.2 ounces |
| Item model number | ICUSB232DB25 |
| Language | English |
| Manufacturer | StarTech.com |
| Product Dimensions | 6.89 x 1.48 x 5.41 inches |

## Product Details

- **Color:** Gray
- **Compatible Devices:** Laptop
- **Connector Type:** USB Type A
- **Item dimensions L x W x H:** 6.89 x 1.48 x 5.41 inches
- **Specific Uses For Product:** personal

## Images

![Startech USB to RS232 DB9/DB25 Serial Adapter Cable - M/M - Image 1](https://m.media-amazon.com/images/I/71Xh90t9-YL.jpg)

## Available Options

This product comes in different **Style Name** options.

## Questions & Answers

**Q: It is windows 10 but it has not connected my device to my PC .. i would of liked instructions like it states you get with them ?**
A: Unfortunately this is not enough information. When you plug the USB to RS-232 adapter into the computer, Windows should recognise this, and install a device driver, as well as assign a COM port number. You need to launch Device Manager and expand the Port (COM & LPT) tag to see if it installed correctly. If it has not, it may be because you do not have the correct device driver installed. If all is OK, then note the COM port number, and use that with whatever software you are using to connect to your device.

**Q: Can this run a Iomega zip 100 drive**
A: The short answer is, sadly, no. These ZIP drives are now long obsolete, and used a special interface.

**Q: Hi i did not receive any instructions with my order and i do not know what to do with the disc.. i need instructions ?? Pls**
A: Hi,
If you are running Windows 10 (don't have any other operating systems) you can ignore the disc as the device is 'Plug and Play'. Windows 10 automatically detects and installs its own driver.

**Q: Can i connect to a cnc lathe**
A: should be able to, as long as the lathe's 9/25 pin serial port does not require an specialised 9/25pin cable (cross-over/null modem type).  ensure the Prolific drivers are loaded into Windows before you connect the cable via USB. 

mine works with Cisco network kit 9pin ports and we also use them in the workshop for sub-sea beacons/hydrophones, all are 9pin though.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    You get what you pay for. Another quality product from StarTech!
  

*by 3***D on Reviewed in the United Kingdom on 15 January 2015*

We purchased a few of these units over time and use them daily to 'talk to' and program AMX and Crestron processors and other control system devices.Although the adapters are supplied with drivers discs, we found that Windows 7, Windows 8 and Windows 8.1 immediately downloaded the correct drivers and worked first time.Having two serial ports on modern laptops is invaluable and these now form part of our on-the-road systems.The supplied bracket also makes it easy to install in a more permanent location, such as our desks.Data 'speeds' range from 300 bps all the way to 921,600 bps, which is quite impressive.Granted, these adapters are more expensive than some, but we have not had any issues regarding communicating with any serial devices using these adapters (which frequently used to happen with cheaper USB to serial adapters).These adapters use the more reliable FTDI chip-sets.More details here:http://uk.startech.com/Cards-Adapters/Serial-Cards-Adapters/2-Port-Industrial-USB-Serial-RJ45-Adapter~ICUSB2322RJ

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    It's all in the box, great product.
  

*by R***. on Reviewed in the United Kingdom on 12 November 2018*

Good quality product, great delivery, very pleased.Now I know, I will be using this company again for another project.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Beware the DB9 to DB25 adapter!!!
  

*by I***N on Reviewed in the United Kingdom on 17 June 2019*

Very simple to install. XP and  W7 automatically correctly detect it and assign a virtual serial port to it. In my case port 7 on W7 and port 5 on XP... but that might be dependent on existing hardware. I bought this to interface with a Watkins-Johnson communications receiver that I plan to write control software for. Being over 25 years old, the receiver has the industry-standard DB25 serial port  on the back, so the inclusion of a DB9-DB25 adapter with the USB-serial adapter sounds nice. HOWEVER, and this is where the 'buyer-beware' flag goes up... the supplied adapter swaps the RXD and TXD signals. This effectively renders the device useless unless, like me, you have the knowledge on how to rig up something to reverse this swap or use a straight-through DB9 to DB25 serial cable.

## Frequently Bought Together

- StarTech.com 3ft (91cm) 1-Port USB to Serial Cable, DB9/DB25 RS232 to USB Converter, Prolific, USB to Serial Adapter
- StarTech.com 10 ft Cross Wired DB9 to DB25 Serial Null Modem Cable - F/M - Null Modem Cable - DB-9 (F) to DB-25 (M) - 10 ft (SCNM925FM)
- OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)…

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-04*