---
product_id: 9730547
title: "StarTech.com 4 Port USB to Serial RS232 Adapter - DB9M - RS232 Extension - Serial to USB, TAA (ICUSB2324)"
brand: "startech"
price: "€ 221.51"
currency: EUR
in_stock: true
reviews_count: 13
url: https://www.desertcart.fi/products/9730547-startech-com-4-port-usb-to-serial-rs232-adapter-db9m
store_origin: FI
region: Finland
---

# Bus-powered, no adapter Plug-and-Play USB 1.1/2.0 4 RS232 ports StarTech.com 4 Port USB to Serial RS232 Adapter - DB9M - RS232 Extension - Serial to USB, TAA (ICUSB2324)

**Brand:** startech
**Price:** € 221.51
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect like a pro—4 ports, zero fuss, infinite possibilities!

## Quick Answers

- **What is this?** StarTech.com 4 Port USB to Serial RS232 Adapter - DB9M - RS232 Extension - Serial to USB, TAA (ICUSB2324) by startech
- **How much does it cost?** € 221.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/9730547-startech-com-4-port-usb-to-serial-rs232-adapter-db9m)

## Best For

- startech enthusiasts

## Why This Product

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

## Key Features

- • **Space-Smart Design:** Compact form factor preserves your workspace for what really matters.
- • **Legacy Meets Modern:** Bridge the gap between vintage serial gear and today’s USB-driven tech.
- • **Power Without Clutter:** Bus-powered design means zero extra power adapters—clean desk, no hassle.
- • **Quad-Port Connectivity:** Expand your setup with 4 RS232 serial ports from a single USB slot.
- • **Seamless Compatibility:** Effortless Plug-and-Play works flawlessly with USB 1.1 and 2.0 devices.

## Overview

The StarTech.com 4 Port USB to Serial RS232 Adapter (DB9M) delivers four additional RS232 serial ports via a single USB connection. Bus-powered and plug-and-play compatible with USB 1.1 and 2.0, it offers a compact, workspace-friendly solution to connect legacy serial devices to modern computers without external power adapters. Backed by a lifetime warranty, it’s the reliable bridge for professionals needing seamless serial connectivity.

## Description

This 4 Port USB to RS232 Serial Hub lets you connect up to four RS232 serial devices to your Mac or PC laptop or desktop computer through a single USB port, as though the computer offered built-on DB9M serial connectors. The RS232 Serial Hub is compactly designed to preserve valuable workspace, and is bus-powered to eliminate the need for an external power adapter. A cost-effective solution that bridges the compatibility gap between modern USB-capable computers and legacy RS232 serial peripherals, this dependable USB/RS232 Serial Adapter hub is backed by StarTech.com's Lifetime Warranty.

## Features

- Provides you with four additional RS232 serial ports
- Bus powered, no external power adapter required
- Easy Plug-and-Play installation
- Fully compliant with USB 1.1 specifications and compatible with USB 2.0

## Product Details

- **Compatible Devices:** PC
- **Specific Uses For Product:** personal
- **Connector Type:** Serial Adapter
- **Color:** Silver
- **Item dimensions L x W x H:** 5.9 x 2.6 x 1 inches

## Images

![StarTech.com 4 Port USB to Serial RS232 Adapter - DB9M - RS232 Extension - Serial to USB, TAA (ICUSB2324) - Image 1](https://m.media-amazon.com/images/I/81VKC2HuBEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    32 bit XP
  

*by S***O on Reviewed in the United States 🇺🇸 on June 12, 2010*

The only complaint is that the installation instructions were a little misleading about how to install the software, but the bottom line is you ask Windows to search the CD for the drivers, and after a longish delay it pops up a list of 3 candidates. It's not hard to tell which one you want.Also, given how cheap serial port hardware is, I'd argue that the unit is a little overpriced. That's why I'm not giving it 5 stars.But it installed cleanly and up popped 4 serial ports, as promised. Works as advertised.This replaced a cheaper but absolutely worthless piece of junk sold by Amazon, manufactured by "IO Crest". If you're hunting for USB to serial conversion, this device, despite being twice the price as that one, is your best bet.Addendum: I'm dropping this to 3 stars, after spending too long trying to work out which serial port on the unit maps to which com port in Windows. You'd think it would be some obvious progression: COM3 in windows to DB 1, COM4 in Windows to DB 2, etc. It wasn't. They got assigned in a random order. Working it out by trial and error was annoying. Not a deal breaker, but come on...Addendum: back to 4 stars. It got hit by a lightning surge and died (can't blame it for that), so I got another, and installation was smoother (and the ports showed up in order this time.) Price could still be lower, for what it does..

### ⭐⭐⭐⭐ 







  
  
    Works well on Windows 7
  

*by K***M on Reviewed in the United States 🇺🇸 on March 2, 2013*

I am writing some automated test software for a device that communicates through 4 RS-232 ports. This Star Tech adapter is perfect for my testing. I use it regularly on two 64 bit Windows 7 machines and one Apple Mac running 32 bit Windows 7, on Boot Camp. The only strange behavior, is that, on all 3 machines, the ports did not install in the order they are numbered on the back of the adapter. They are numbered 1,2,3,4 but in my case they installed as 1,2,4,3. So, on the computers, port 3 was mapped to the port labeled as 4 on the device. I spent a few hours one night figuring that one out. You are able to reassign the port numbers and the assignments are retained by the operating system.All in all, this device is well worth the money ;)

### ⭐⭐⭐⭐⭐ 







  
  
    This device works great
  

*by T***0 on Reviewed in the United States 🇺🇸 on May 17, 2012*

My new PC motherboard (Asus Rampage IV Extreme) no longer has any serial port.  However, there are still a few things in the house that require the occasional use of a serial connection.  I primarily use it to connect to a Simply Automated UPB PIM (Universal Power-line Bus Plug-in Interface Module) and run the Upstart software to configure the home UPB network.  I also use it to program a URC Remote Control.  I guess I could have gotten away with a dual port adapter, but the price difference is not that much.  My PC runs Windows 7 64-bit.  On this OS, I didn't need to install any driver myself.  As soon as I plugged in the unit to my PC, Windows automatically searched the Internet, downloaded, and installed the required FTDI driver.  Device Management shows the 4 new serial ports.  On my machines, they are assigned Ports #6, 7, 8, and 9.  They correspond one-to-one to the physical ports on the unit.  Unplugging and replugging the unit didn't change the sequence, so this unit must have COM retention capability.  All-in-all, I am quite pleased with it.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.fi/products/9730547-startech-com-4-port-usb-to-serial-rs232-adapter-db9m](https://www.desertcart.fi/products/9730547-startech-com-4-port-usb-to-serial-rs232-adapter-db9m)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-03*