---
product_id: 325090468
title: "DTECH USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black)"
brand: "dtech"
price: "$50.28"
currency: USD
in_stock: true
reviews_count: 5
category: "Dtech"
url: https://www.desertcart.us/products/325090468-dtech-usb-to-ttl-serial-adapter-3-3v-debug-cable
store_origin: US
region: United States of America
---

# Supports up to 5V, 2.5A max current PL2303 Prolific chipset for reliable UART-USB bridging 3ft USB 2.0 cable length DTECH USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black)

**Brand:** dtech
**Price:** $50.28
**Availability:** ✅ In Stock

## Summary

> ⚡ Debug Like a Pro — Power Up Your Serial Connections!

## Quick Answers

- **What is this?** DTECH USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black) by dtech
- **How much does it cost?** $50.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/325090468-dtech-usb-to-ttl-serial-adapter-3-3v-debug-cable)

## Best For

- dtech enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Durable Design:** 3-foot black cable with a sturdy build, perfect for professional workstations and on-the-go debugging setups.
- • **Precision UART Interface:** 4-pin female header with TX, RX, VCC, and GND lines tailored for 3.3V logic level debugging and firmware flashing.
- • **Versatile Device Support:** Ideal for routers, GPS modules, set-top boxes, Raspberry Pi, and other embedded systems requiring serial debugging.
- • **Plug & Play Compatibility:** Seamlessly integrates with Windows 10/8/7/XP/Vista for instant device recognition and driver support.
- • **Robust Prolific PL2303 Chipset:** Genuine chipset ensures stable data transfer and configurable EEPROM for advanced serial communication needs.

## Overview

The DTECH USB to TTL Serial Adapter is a 3-foot black cable featuring a genuine PL2303 Prolific chipset that converts USB 2.0 to 3.3V UART serial signals. Designed for professional-grade debugging and firmware flashing, it supports Windows platforms from XP to 10 and offers a 4-pin female header for TX, RX, VCC, and GND connections. Perfect for developers and engineers working with routers, embedded devices, and IoT projects, this adapter combines reliability, versatility, and plug-and-play convenience in a compact form factor.

## Description

International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

Review: The documentation was a bit confusing as the serial connection voltage was shown as 5v, but the cable was 3.3 volts as advertised and worked like a charm to program an ESP32 device. The specific part, in my case, was detected as a PL2303GC and was reported as real (unlike some other cables I bought before this one).
Review: This review is for the "DTech USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black)" First, the warning: Although this is sold as a 3.3V debug cable, the red wire is in fact soldered to the 5V line as you can see in picture 2. Minus 1 star since that could easily damage or destroy your device. It does have a solder pad inside that you could use to convert the VCC from 5V (standard) to 3.3V if that is your use case as long as you can solder. I strongly advise you check yours before you hook it up, as others have pointed this exact situation out in their reviews. If it is wrong, and you cannot solder it to the correct pad, return it. There is a genuine Prolific PL2303GC chip inside, not some generic knock-off. I already had the drivers installed since I have another known genuine debug cable already, and this one showed up immediately without needing to install drivers. I am running Windows 11. The one I received had a 38 inch long cord as measured from the end of the connectors to where the case starts for the USB. It is well made, and you can easily remove the casing to check the chip and put it back together again. The documentation is included and thorough. Specs: USB 2.0 Prolific PL2303GC chip Can provide 3.3V or 5V (see warning above) UART interface supports 7 or 8 data bits, 1 or 2 stop bits, and odd/even/mark/space/no parity Supports VID and PID Pinout: White: Transmit (TX) Green: Receive (RX) Black: Ground (GND) Red: 3.3V or 5V (VCC) - check yours before connecting to a device To test if it works: Connect the White and Green wires with anything that will conduct (small paperclip works great, or strip the ends on a bread bag twist tie and use that) Make sure the wire you used cannot touch anything that would ground it (like your computer case). If concerned, use scotch tape to insulate it or secure it somewhere safe Connect the device to your computer, and go to Device Manager Look under Ports (COM & LPT) Install the Prolific drivers if needed (download from prolific.com.tw, use GUEST login) Once the device has the drivers loaded, check to see which port number it was assigned (if you see multiple, unplug and plug back in to see what number disappears/reappears Open Putty or another terminal client program Change the Serial Line setting to your COM port number (e.g. COM7) Leave the speed setting at the default value Click Open A new terminal window will open Start typing. If you see your letters appearing on the screen, loopback is working. If you want more proof, disconnect the Green and White wires from each other and try typing again. I will give it a workout over the next week going firmware flashing and debugging. If I find any flaws or issues, I will update this review.

## Features

- 3ft PL2303 USB to TTL serial adapter 3V3 (with 4 pin 0.1 pitch female header socket) connects devices with 3.3 V logic level UART signals interface to a laptop via USB port
- 3 feet USB to TTL serial cable 3.3V (4 way output flying leads ) provides access to UART (transmit) Tx, (receive) Rx, VCC (5V) and GND
- Prolific chipset on the PCB board has configurable internal EEPROM and UART signals can be individually inverted by configuring the EEPROM
- 4 pin TTL to USB Converter cord is compatible with Windows 10, 8, 8.1, 7 (32, 64-bit), 2008/XP/Vista/CE; ideal USB 2.0 debug cord for Vendor ID re-write, router, GPS, set top box, transmitter, flash firmware on hard drive, etc.
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08BLKBK1K |
| Brand | DTECH |
| Cable Type | USB |
| Colour | Black |
| Compatible Devices | computer, Laptop, Raspberry Pi, calculator, MBP, router, microphone, industrial controls, test equipment and instrumentation, consumer electronics, synthesizers, machine tool numerical controls, printers and video display terminals |
| Compatible Phone Models | Potentially compatible with smartphones, specific models unknown |
| Connectivity Technology | Serial Port |
| Connector Gender | Male |
| Connector Type | 5 pin TTL, USB Type A |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.0 4.0 out of 5 stars (58) |
| Data Transfer Rate | 3 Gigabits Per Second |
| Indoor Outdoor Usage | Indoor |
| Item Shape | Round |
| Item Weight | 0.04 Kilograms |
| Manufacturer | Guangzhou DTECH Electronics Technology Co.,Ltd |
| Maximum Current | 2.5 Amps |
| Maximum Voltage | 5 Volts (DC) |
| Model Name | 3ft USB to TTL 3.3v cable 4 pin |
| Model Number | DT-6553/1m |
| Number of Items | 1 |
| Number of Pins | 4 |
| Other Special Features of the Product | Data Transfer, PL2303 chip |
| Recommended Uses For Product | Indoor, router, modem,etc |
| Specification Met | CE |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** DTECH
- **Cable type:** USB
- **Connector type:** 5 pin TTL, USB Type A
- **Special feature:** Data Transfer, PL2303 chip

## Images

![DTECH USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black) - Image 1](https://m.media-amazon.com/images/I/51VQwX7E7aL.jpg)
![DTECH USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black) - Image 2](https://m.media-amazon.com/images/I/51GNos1fMzL.jpg)
![DTECH USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black) - Image 3](https://m.media-amazon.com/images/I/61it2xvgKNL.jpg)
![DTECH USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black) - Image 4](https://m.media-amazon.com/images/I/51DrBaMaWyL.jpg)
![DTECH USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black) - Image 5](https://m.media-amazon.com/images/I/61WNQD2VdiL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by W***P on 28 March 2024*

The documentation was a bit confusing as the serial connection voltage was shown as 5v, but the cable was 3.3 volts as advertised and worked like a charm to program an ESP32 device. The specific part, in my case, was detected as a PL2303GC and was reported as real (unlike some other cables I bought before this one).

### ⭐⭐⭐⭐ Review
*by U***F on 12 March 2025*

This review is for the "DTech USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black)" First, the warning: Although this is sold as a 3.3V debug cable, the red wire is in fact soldered to the 5V line as you can see in picture 2. Minus 1 star since that could easily damage or destroy your device. It does have a solder pad inside that you could use to convert the VCC from 5V (standard) to 3.3V if that is your use case as long as you can solder. I strongly advise you check yours before you hook it up, as others have pointed this exact situation out in their reviews. If it is wrong, and you cannot solder it to the correct pad, return it. There is a genuine Prolific PL2303GC chip inside, not some generic knock-off. I already had the drivers installed since I have another known genuine debug cable already, and this one showed up immediately without needing to install drivers. I am running Windows 11. The one I received had a 38 inch long cord as measured from the end of the connectors to where the case starts for the USB. It is well made, and you can easily remove the casing to check the chip and put it back together again. The documentation is included and thorough. Specs: USB 2.0 Prolific PL2303GC chip Can provide 3.3V or 5V (see warning above) UART interface supports 7 or 8 data bits, 1 or 2 stop bits, and odd/even/mark/space/no parity Supports VID and PID Pinout: White: Transmit (TX) Green: Receive (RX) Black: Ground (GND) Red: 3.3V or 5V (VCC) - check yours before connecting to a device To test if it works: Connect the White and Green wires with anything that will conduct (small paperclip works great, or strip the ends on a bread bag twist tie and use that) Make sure the wire you used cannot touch anything that would ground it (like your computer case). If concerned, use scotch tape to insulate it or secure it somewhere safe Connect the device to your computer, and go to Device Manager Look under Ports (COM & LPT) Install the Prolific drivers if needed (download from prolific.com.tw, use GUEST login) Once the device has the drivers loaded, check to see which port number it was assigned (if you see multiple, unplug and plug back in to see what number disappears/reappears Open Putty or another terminal client program Change the Serial Line setting to your COM port number (e.g. COM7) Leave the speed setting at the default value Click Open A new terminal window will open Start typing. If you see your letters appearing on the screen, loopback is working. If you want more proof, disconnect the Green and White wires from each other and try typing again. I will give it a workout over the next week going firmware flashing and debugging. If I find any flaws or issues, I will update this review.

### ⭐⭐⭐⭐⭐ Review
*by B***N on 17 April 2023*

Works great for reading error codes in your PS3

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-31*