---
product_id: 436876
title: "USB to Serial 9-Pin Converter Cable, TU-S9, USB to RS232 Serial Adapter, Supports Windows & Mac, 64cm (25 in.) Cable Length, NDAA Compliant, Plug & Play, White"
brand: "trendnet"
price: "RM114"
currency: MYR
in_stock: true
category: "Tren Dnet"
url: https://www.desertcart.com.my/products/436876-usb-to-serial-9-pin-converter-cable-tu-s9-usb
store_origin: MY
region: Malaysia
---

# USB 1.1/2.0/3.0 compatible 6Mbps 25-inch flexible cable for versatile setups NDAA compliant for gov-grade security USB to Serial 9-Pin Converter Cable, TU-S9, USB to RS232 Serial Adapter, Supports Windows & Mac, 64cm (25 in.) Cable Length, NDAA Compliant, Plug & Play, White

**Brand:** trendnet
**Price:** RM114
**Availability:** ✅ In Stock

## Summary

> 🔗 Bridge the old and new with confidence — stay connected, stay ahead!

## Quick Answers

- **What is this?** USB to Serial 9-Pin Converter Cable, TU-S9, USB to RS232 Serial Adapter, Supports Windows & Mac, 64cm (25 in.) Cable Length, NDAA Compliant, Plug & Play, White by trendnet
- **How much does it cost?** RM114 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/436876-usb-to-serial-9-pin-converter-cable-tu-s9-usb)

## 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

- • **Flexible Installation:** 25-inch integrated cable adapts to any workspace, eliminating clutter and connection headaches.
- • **Government-Grade Security:** NDAA compliance ensures your networking solutions meet strict U.S. & Canada government standards.
- • **Seamless USB Compatibility:** Plug & play with USB 1.1, 2.0, and 3.0 ports for lightning-fast 6Mbps data transfer.
- • **Effortless Device Integration:** Connect legacy RS-232 serial devices like modems and printers to modern laptops and desktops instantly.
- • **Trusted Reliability & Support:** Backed by 2 years manufacturer protection and expert English-speaking tech support during business hours.

## Overview

The TRENDnet TU-S9 USB to Serial 9-Pin Converter Cable offers seamless connectivity between RS-232 serial devices and modern USB ports. Supporting USB 1.1 through 3.0 with a 6Mbps data rate, it features a flexible 25-inch cable and NDAA compliance for government-grade security. Compatible with Windows and Mac OS, it’s backed by 2 years of manufacturer protection and reliable tech support, making it the go-to adapter for professionals needing legacy device integration.

## Description

This USB to Serial converter allows you to connect an RS-232 serial device such as a modem to a USB port on your desktop or laptop. USBSupports USB 1.1 and compatible with USB 2.0 and USB 3.0 ports.RS-232 Serial ConnectorConnect RS-232 serial devices such as modems and network switches using the widely supported USB standard found in most laptops and desktops today.Flexible CableIntegrated flexible 540 mm (21 in.) USB cable accommodates most installation scenarios. PACKAGE CONTENTS• TU-S9• Quick Installation Guide• CD-ROM (Drivers)

## Features

- USB: The USB to serial adapter supports USB 1.1 and it is compatible with USB 2.0 and USB 3.0 ports with a 6Mbps Data Rate
- NDAA COMPLIANT: With our NDAA compliant USB to Serial 9-Pin Converter Cable, you can plan and install networking solutions that Government customers demand today (U.S. and Canada Only)
- MANUFACTURER PROTECTION: We stand by the quality of our products.The TU-S9 USB to Serial 9-Pin Converter Cable is backed and supported with 2 years of TRENDnet Manufacturer Protection.
- RELIABLE TECH SUPPORT: Our team of advisors, support and tech experts are English speaking, and available for all your needs during normal business hours. We take pride in being there for our customers.
- RS-232 SERIAL CONNECTOR: Connect RS-232 serial devices, such as modems or printers, using the widely supported USB standard found in most laptops and desktops today.
- SUPPORTED OPERATING SYSTEMS: The USB to serial converter adapter is compatible with Windows and Mac operating systems. Windows 10, 8.1, 8, 7. Mac OS 10.11, 10.10, 10.9, 10.8, 10.7, 10.6
- FLEXIBLE CABLE: Integrated and flexible 540mm (21 in.) USB 2.0 cable accommodates most installation scenarios. Total cable length of 25 inches when including the RS-232 (9pin) and USB Type A.
- EASY SETUP: Simple installation in seconds of the USB to Serial 9-Pin Converter Cable. Insert the your computer

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0007T27H8 |
| Best Sellers Rank | #34 in Serial Cables |
| Brand | TRENDnet |
| Built-In Media | CD-ROM (Driver and User’s Guide), Quick Installation Guide, TU-S9 |
| Color | White |
| Compatible Devices | Gateways, Laptop, Modems, PLC controllers, POS systems, Printer |
| Connector Type | USB Type A |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,203) |
| External Testing Certification | CE, FCC |
| Finish | White |
| Global Trade Identification Number | 00710931303209 |
| Input Voltage | 5 Volts (DC) |
| Item Dimensions | 2.56 x 1.38 x 0.39 inches |
| Item Weight | 40 Grams |
| Manufacturer | TRENDnet |
| Mfr Part Number | TU-S9 |
| Model Number | TU-S9 |
| Nominal Power | 2.5 Watts |
| Number of Items | 1 |
| Number of Ports | 3 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specific Uses For Product | Serial Devices |
| UPC | 710931303209 |
| Unit Count | 1 Count |
| Warranty Description | 2 year |

## Product Details

- **Color:** White
- **Compatible Devices:** Gateways, Laptop, Modems, PLC controllers, POS systems, Printer
- **Connector Type:** USB Type A
- **Item dimensions L x W x H:** 2.56 x 1.38 x 0.39 inches
- **Specific Uses For Product:** Serial Devices

## Images

![USB to Serial 9-Pin Converter Cable, TU-S9, USB to RS232 Serial Adapter, Supports Windows & Mac, 64cm (25 in.) Cable Length, NDAA Compliant, Plug & Play, White - Image 1](https://m.media-amazon.com/images/I/51vgKmQZPJL.jpg)

## Available Options

This product comes in different **Size, Style** 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.

## 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
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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-06-28*