---
product_id: 504832174
title: "USB to RS232 Serial Adapter, USB-RS232 Converter Cable, USB 9-Pin Serial Cable Support Windows 7/8/10/32/64"
brand: "ec buying"
price: "S$29"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/504832174-usb-to-rs232-serial-adapter-usb-rs232-converter-cable-usb
store_origin: SG
region: Singapore
---

# No external power needed Supports Win7/8/10 32/64-bit USB to 9-pin serial conversion USB to RS232 Serial Adapter, USB-RS232 Converter Cable, USB 9-Pin Serial Cable Support Windows 7/8/10/32/64

**Brand:** ec buying
**Price:** S$29
**Availability:** ✅ In Stock

## Summary

> 🔗 Bridge the old and new—connect smarter, work faster!

## Quick Answers

- **What is this?** USB to RS232 Serial Adapter, USB-RS232 Converter Cable, USB 9-Pin Serial Cable Support Windows 7/8/10/32/64 by ec buying
- **How much does it cost?** S$29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/504832174-usb-to-rs232-serial-adapter-usb-rs232-converter-cable-usb)

## Best For

- ec buying enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Simplicity:** Instantly transforms legacy serial devices into USB-ready tech—no hassle, no extra power.
- • **Effortless Installation:** Driver auto-installs with a simple plug-in—get your COM port ready in seconds.
- • **Universal Compatibility:** Seamlessly supports a wide range of MCUs, LED controllers, modems, and ISDN adapters for versatile use.
- • **Cross-Platform Powerhouse:** Works flawlessly across Windows (7/8/10, 32/64-bit), Mac OS, and legacy systems—future-proof your setup.
- • **Blazing Fast Data Transfer:** Full-speed USB 2.0 support with up to 12 Mbps ensures smooth, reliable communication.

## Overview

This USB to RS232 Serial Adapter cable converts your computer's USB port into a 9-pin serial interface, enabling legacy device connectivity without external power or complex setup. Compatible with a broad range of devices and operating systems, it supports full-speed USB 2.0 data transfer up to 12 Mbps and installs effortlessly with automatic driver recognition, making it an essential tool for professionals bridging modern and traditional tech.

## Description

★Product features: easy installation, no external power supply, and physical drive required ★Scope of application: ♥This product can easily realize the conversion between the computer USB interface and the universal serial port, providing a fast channel for the computer without a serial port, and using this product is equivalent to turning the traditional serial port device into a plug-and-play USB device. ♥ Supporting various models of single-chip microcomputer, single-chip STC download, LED screen control card, MODEM, and ISDN terminal adapter communication is suitable for computers or notebooks with USB ports. ★Application platform: Support USB1.0/1.1 specification, compatible with USB2.0 specification, support full-speed transfer mode 12MBPS, support Win98, 98SE, Me, 2000, XP, Mac OS8.6, vista, win7-32, 64-bit. ★Installation instructions: 1. Run the driver CH340.EXE file to install 2. Connect the USB serial cable to the USB interface of the computer, and automatically install the driver 3. After the installation is successful, the COM port appears in the device manager.

## Features

- √USB to 9-pin serial cable Product features: easy installation, no external power supply, and physical drive required
- √Applicable scope: This product can easily realize the conversion between the USB interface of the computer and the universal serial port, providing a fast channel for the computer without a serial port, and using this product is equivalent to turning the traditional serial port device into a plug-and-play USB device.
- √ Supports various models of MCU, MCU STC download, LED screen control card, MODEM, and ISDN terminal adapter communication is suitable for computers or notebooks with USB ports.
- √Application platform: Support USB1.0/1.1 specification, compatible with USB2.0 specification, support full-speed transfer mode 12MBPS, support Win98, 98SE, Me, 2000, XP, Mac OS8.6, vista, win7-32, 64-bit.
- √Installation Instructions: 1. Run the driver CH340.EXE file to install 2. Connect the USB serial cable to the USB interface of the computer, and automatically install the driver 3. After the installation is successful, the COM port appears in the device manager

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B3937767 |
| Best Sellers Rank | #33 in Serial Adapters |
| Customer Reviews | 4.3 4.3 out of 5 stars (121) |
| Date First Available | June 6, 2022 |
| Item Weight | 1.69 ounces |
| Item model number | HL-340 |
| Manufacturer | HL-340 USB to serial cable (COM) USB-RS232 USB nine-pin serial cable supports win7-64 bit |
| Package Dimensions | 8.27 x 5.43 x 1.42 inches |

## Product Details

- **Compatible devices:** Modem, Personal Computer
- **Specific uses for product:** PC
- **Connector type:** Usb 2.0
- **Colour:** blue
- **Brand:** EC Buying

## Images

![USB to RS232 Serial Adapter, USB-RS232 Converter Cable, USB 9-Pin Serial Cable Support Windows 7/8/10/32/64 - Image 1](https://m.media-amazon.com/images/I/6171mo1LHoL.jpg)

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.sg/products/504832174-usb-to-rs232-serial-adapter-usb-rs232-converter-cable-usb](https://www.desertcart.sg/products/504832174-usb-to-rs232-serial-adapter-usb-rs232-converter-cable-usb)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-17*