---
product_id: 276067211
title: "Trendnet USB to Serial Converter"
brand: "trendnet"
price: "$78.11"
currency: USD
in_stock: true
reviews_count: 5
category: "Trendnet"
url: https://www.desertcart.ec/products/276067211-trendnet-usb-to-serial-converter
store_origin: EC
region: Ecuador
---

# Plug & Play quick installation Universal USB 1.1/2.0/3.0 compatibility Supports RS-232 serial devices Trendnet USB to Serial Converter

**Brand:** trendnet
**Price:** $78.11
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect the past to your future with ease!

## Quick Answers

- **What is this?** Trendnet USB to Serial Converter by trendnet
- **How much does it cost?** $78.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/276067211-trendnet-usb-to-serial-converter)

## Best For

- trendnet enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Reliability:** Backed by a 2-year TRENDnet warranty for peace of mind.
- • **Flexible 21-Inch Cable:** Generous cable length for versatile setup without clutter.
- • **Plug & Play Simplicity:** Instant driver installation means zero downtime and no tech headaches.
- • **Universal Compatibility:** Works flawlessly across Windows, macOS, and Linux systems.
- • **Seamless USB to Serial Bridge:** Connect legacy RS-232 devices effortlessly to modern USB ports.

## Overview

The TRENDnet TU-S9 USB to Serial Converter enables professional users to connect RS-232 serial devices like modems and network switches to any USB port, supporting USB 1.1 through 3.0 standards. Featuring plug-and-play installation and broad OS compatibility, it offers a flexible 21-inch cable and a 2-year manufacturer warranty, making it an essential tool for seamless legacy device integration.

## Description

TRENDnet’s USB to Serial Converter, TU-S9, allows you to connect an RS-232 serial device such as a modem to a USB port on your desktop or laptop. The USB supports USB 1.1 and compatible with USB 2.0 and USB 3.0 ports. The connector has a integrated flexible 540 mm (21 Inch) USB cable accommodates most installation scenarios.PACKAGE CONTENTS TU-S9 Quick Installation Guide CD-ROM (Drivers)

Review: Die Kombination Windows 7 Ultimate 64bit und HP Laserjet 4050 aus dem Jahre Schnee funktioniert einwandfrei. Nach Verbinden des Kabels wurden alle Treiber automatisch installiert.
Review: Many of these adapters have questionable compatibility. They will work for one device and not for another. I am writing this review to sat that this device will work the Lenovo Yoga 910. If you have this laptop, get this.

## Features

- Connection: Connect a RS-232 serial device such as a modem to a USB port on your computer
- Quick Installation: Easy installation with Universal Plug and Play (UPnP)
- Compatibility: Supports multiple operating systems
- Ports: Supports USB 1.1 and compatible with USB 2.0 and USB 3.0 ports
- Devices: Connect RS-232 serial devices such as modems and network switches using the widely supported USB standard found in most laptops and desktops today
- Protection: 2 Years TRENDnet Manufacturer's warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0007T27H8 |
| Best Sellers Rank | #92,377 in Computers ( See Top 100 in Computers ) #6,161 in USB Cables |
| Item model number | TU-S9 |
| Language | English |
| Manufacturer | TRENDnet |
| Product Dimensions | 6.5 x 3.5 x 1 cm; 40 g |

## Product Details

- **Colour:** white
- **Compatible devices:** Desktop
- **Connector type:** usb
- **Item dimensions L x W x H:** 6.5 x 3.5 x 1 centimeters
- **Specific uses for product:** Business

## Images

![Trendnet USB to Serial Converter - Image 1](https://m.media-amazon.com/images/I/51vgKmQZPJL.jpg)
![Trendnet USB to Serial Converter - Image 2](https://m.media-amazon.com/images/I/61eaAA+5ftL.jpg)
![Trendnet USB to Serial Converter - Image 3](https://m.media-amazon.com/images/I/61d74yD20OL.jpg)
![Trendnet USB to Serial Converter - Image 4](https://m.media-amazon.com/images/I/61UWZ8PhCZL.jpg)
![Trendnet USB to Serial Converter - Image 5](https://m.media-amazon.com/images/I/61QSkIYUlEL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: will this connector work for my royal cash register? I have bought scanners for the register, but wonder if the USB scanners may last longer.**
A: This is a serial to USB converter, not vice-versa. If your scanner has a USB connection already, then this item is of no use to you. By the way, less and less laptops (and I would assume desktops) come equipped with a COM port (that is why I needed this converter), so opting your USB port for a COM port sounds more of an own goal. Perhaps I misunderstood your question.

**Q: is it prolific**
A: Prolific chips often exhibits erratic behavior with some serial devices.  The reliable chip is the FTDI chip.

**Q: Will this work to connect a computer to a CISCO Switch via the console cable?**
A: Yesssss its a great usb to serial cable

**Q: I assume this will plug and play with WIN10 64x ...? thanks!**
A: It is just a cable so I would assume so.  My husband uses it with his Windows 10 laptop to connect to his telescope.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***E on 12 July 2017*

Die Kombination Windows 7 Ultimate 64bit und HP Laserjet 4050 aus dem Jahre Schnee funktioniert einwandfrei. Nach Verbinden des Kabels wurden alle Treiber automatisch installiert.

### ⭐⭐⭐⭐⭐ Review
*by S***K on 1 July 2019*

Many of these adapters have questionable compatibility. They will work for one device and not for another. I am writing this review to sat that this device will work the Lenovo Yoga 910. If you have this laptop, get this.

### ⭐⭐⭐⭐⭐ Review
*by A***N on 30 May 2014*

Using this to communicate with PIC micro-controllers using a CCS serial port monitor that is built into their compiler and it is working perfectly. Install the drivers and the program detects the comport properly. The only thing that I don't like about it is that it needs to install the drivers every time you plug it into a different usb port and each usb port is then a different comport, so if you switch usb ports remember to change the setting in you serial port monitor to make sure that you are reading the correct port. Other than that it is solid for a solid price.

## Frequently Bought Together

- TRENDnet USB to Serial 9-Pin Converter Cable, TU-S9, USB to RS232 Serial Adapter, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 64cm (25 in.) Cable Length, Plug & Play, White
- USB to RJ45 Console Cable 2pack, Essential Tool for Cisco, NETGEAR, Ubiquiti, LINKSYS, TP-Link Routers/Switches Connection, Compatible with Windows, Mac, Linux Laptops
- OIKWAN DB9 to RJ45 Console Cable,Compatible with Cisco Routers Switches Firewalls CAB-CONSOLE-RJ45

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**Shop now:** [https://www.desertcart.ec/products/276067211-trendnet-usb-to-serial-converter](https://www.desertcart.ec/products/276067211-trendnet-usb-to-serial-converter)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-13*