---
product_id: 25915941
title: "4 Port USB to RS232 Serial Adapter w/Optical Isolation, Surge Protection, 2500Vrms Isolation, Bus Powered, High Speed Serial Communication for Industrial Use"
brand: "serialgear"
price: "NT$18694"
currency: TWD
in_stock: true
url: https://www.desertcart.tw/products/25915941-4-port-usb-to-rs232-serial-adapter-w-optical-isolation
store_origin: TW
region: Taiwan
---

# 2500Vrms optical isolation & surge protection 4 RS232 ports, multi-device ready High-speed data up to 921.6Kbps 4 Port USB to RS232 Serial Adapter w/Optical Isolation, Surge Protection, 2500Vrms Isolation, Bus Powered, High Speed Serial Communication for Industrial Use

**Brand:** serialgear
**Price:** NT$18694
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your legacy devices with lightning-fast, protected serial connectivity!

## Quick Answers

- **What is this?** 4 Port USB to RS232 Serial Adapter w/Optical Isolation, Surge Protection, 2500Vrms Isolation, Bus Powered, High Speed Serial Communication for Industrial Use by serialgear
- **How much does it cost?** NT$18694 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/25915941-4-port-usb-to-rs232-serial-adapter-w-optical-isolation)

## Best For

- serialgear enthusiasts

## Why This Product

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

## Key Features

- • **Quad-Port Powerhouse:** Connect and control up to 4 serial devices simultaneously with ease.
- • **Plug & Play Simplicity:** Bus-powered design means zero external power hassles—just USB and go.
- • **Blazing Fast Communication:** Supports data rates up to 921.6Kbps for seamless high-speed serial transfers.
- • **Industrial-Grade Protection:** Built-in 2500Vrms optical isolation and surge protection safeguard your critical equipment.
- • **Universal USB Compatibility:** Works flawlessly with USB 1.0, 1.1, and forward compatible with USB 2.0 for future-proof connectivity.

## Overview

This 4 Port USB to RS232 Serial Adapter delivers industrial-grade, high-speed serial communication with 2500Vrms optical isolation and surge protection. Bus-powered and compatible with USB 1.0/1.1/2.0, it supports up to four DB9 male UART ports at data rates up to 921.6Kbps, making it the perfect solution for professionals needing reliable, multi-device serial connectivity without external power.

## Description

Full description not available

## Features

- Fully compatible with USB1.0 and USB 1.1; Forward compatible with USB 2.0
- Supports 4 DB9-Male UART Serial ports with Data Rate from 75 bps to 921.6Kbps
- Supports Isolation and Surge Protection Features
- Power solely from USB Bus. No external power supply needed.
- Supports 3-wire RS232 Signals (TXD, RXD, GND)

## Product Details

- **Compatible Devices:** Laptops, Desktops, Mouse, Printers, Tablets, etc.
- **Connector Type:** Serial Adapter
- **Color:** Black
- **Brand:** SerialGear
- **Number of Ports:** 4

## Images

![4 Port USB to RS232 Serial Adapter w/Optical Isolation, Surge Protection, 2500Vrms Isolation, Bus Powered, High Speed Serial Communication for Industrial Use - Image 1](https://m.media-amazon.com/images/I/51GqjpeSYnL.jpg)
![4 Port USB to RS232 Serial Adapter w/Optical Isolation, Surge Protection, 2500Vrms Isolation, Bus Powered, High Speed Serial Communication for Industrial Use - Image 2](https://m.media-amazon.com/images/I/61nsunAlenL.jpg)
![4 Port USB to RS232 Serial Adapter w/Optical Isolation, Surge Protection, 2500Vrms Isolation, Bus Powered, High Speed Serial Communication for Industrial Use - Image 3](https://m.media-amazon.com/images/I/61kF7ju6mvL.jpg)
![4 Port USB to RS232 Serial Adapter w/Optical Isolation, Surge Protection, 2500Vrms Isolation, Bus Powered, High Speed Serial Communication for Industrial Use - Image 4](https://m.media-amazon.com/images/I/61v9g-oKMPL.jpg)
![4 Port USB to RS232 Serial Adapter w/Optical Isolation, Surge Protection, 2500Vrms Isolation, Bus Powered, High Speed Serial Communication for Industrial Use - Image 5](https://m.media-amazon.com/images/I/61sGEK0TsnL.jpg)

---

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**Shop now:** [https://www.desertcart.tw/products/25915941-4-port-usb-to-rs232-serial-adapter-w-optical-isolation](https://www.desertcart.tw/products/25915941-4-port-usb-to-rs232-serial-adapter-w-optical-isolation)

---

*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-29*