---
product_id: 300931386
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: "€ 37.58"
currency: EUR
in_stock: true
reviews_count: 5
category: "Dtech"
url: https://www.desertcart.be/products/300931386-dtech-usb-to-ttl-serial-adapter-3-3v-debug-cable
store_origin: BE
region: Belgium
---

# 3.3V Logic Level UART Signals Genuine Prolific PL2303TA Chip USB 2.0 Type A Male Connector 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:** € 37.58
**Availability:** ✅ In Stock

## Summary

> ⚡ Debug Smarter, Not Harder — The Ultimate USB to TTL Powerhouse

## 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?** € 37.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/300931386-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

- • **Broad Windows OS Support:** Compatible with Windows 10, 8, 7, XP, Vista, and more for hassle-free driver integration.
- • **Versatile 4-Pin Female Header:** Access TX, RX, VCC, and GND signals for flexible debugging, programming, and firmware flashing.
- • **Robust Prolific PL2303 Chipset:** Ensures reliable, high-speed data transfer up to 3 Mbps with configurable UART settings.
- • **Plug & Play USB 2.0 Compatibility:** Seamlessly connects legacy UART devices to modern laptops with universal USB-A interface.
- • **Precision 3.3V Logic Level Support:** Safely interfaces with sensitive microcontrollers and IoT devices without voltage mismatch risks.

## Overview

The DTech USB to TTL Serial Adapter is a 3-foot cable featuring a genuine Prolific PL2303TA chip that converts USB 2.0 signals to 3.3V UART logic levels. Designed for professional debugging, programming, and firmware flashing, it supports up to 3 Mbps data transfer and is compatible with a wide range of Windows operating systems. Its 4-pin female header provides direct access to TX, RX, VCC, and GND signals, making it an essential tool for developers and engineers working with microcontrollers, routers, and legacy serial devices.

## Description

3-Foot PL2303TA chip USB to TTL serial adapter cable for 3.3 V logic level serial communication (rx, tx, vcc and GND) The USB TLL serial converter is built with Prolific PL2303 chip, FTDI’s royalty-free VCP allow for communication as a standard COM port; a great conversion data cord to meet with your needs of debugging, boot-loading, programming, etc. NOTE: If any installation or usage issues, please email us or you may download a driver and usage guide on Prolific official website The original PL2303 chip is embedded in the USB-A end; 4 way 0.1” header connector with GND (ground), VCC (5V), RX and TX at 3V3 logic level. Applications: Upgrading Legacy Peripherals to USB Interface Microcontroller UART or I/O, FPGA / PLD to USB Industrial Control USB Software / Hardware Encryption Dongles ... Features - The I/O pins of the wire are configured to operate at 3.3V logic level - Entire USB protocol handled by the electronics in the cable; - UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd / even / mark / space / no parity; - Data transfer rates from 300 to 3M baud rate at TTL levels; - Internal EEPROM with users writable area; - Supply voltage comes from USB bus, no external supply required; - UHCI / OHCI / EHCI host controller compatible Specific Interface A: USB 2.0 type A Male Port Interface B: 4 pin Female Socket flying leads Chip: Prolific PL2303TA Supports Windows 2008, XP and XP 64-bit, Vista and XP 64-bit, CE 4.2, 5.0 and 6.0; Windows 7, 8, 8.1, 10 (32 and 64-bit); Cable Colour: Black Wire Length: 1-Meter What’s Included 1x USB to Serial TTL Level Converter Cable 3 ft 1x User Manual

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
- A genuine PL2303TA chip module is housed in USB 2.0 type A male terminal for wider compatibility and supports reliable data transfer rates
- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08BLKBK1K |
| Best Sellers Rank | #21,047 in Computers ( See Top 100 in Computers ) #41 in Serial Adapters |
| Brand Name | DTECH |
| Cable Type | USB |
| Color | 4 pin 3.3V |
| Compatible Devices | Router |
| Compatible Phone Models | Potentially compatible with smartphones, specific models unknown |
| Connectivity Technology | Serial Port |
| Connector Gender | Male |
| Connector Type | usb |
| Country Of Origin | China |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.1 4.1 out of 5 stars (58) |
| Data Transfer Rate | 3 Gigabits Per Second |
| Indoor Outdoor Usage | Indoor |
| Item Length | 3 Feet |
| Item Shape | Flat |
| Item Weight | 0.04 Kilograms |
| Manufacturer | DTech |
| Maximum Current | 2.5 Amps |
| Maximum Voltage | 5 Volts (DC) |
| Model | DT-6553/1m |
| Model Name | 3ft USB to TTL 3.3v cable 4 pin |
| 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 |
| Warranty Description | 180 days afrter the date of the purchase |

## Product Details

- **Brand:** DTECH
- **Cable type:** USB
- **Compatible devices:** Router
- **Connector type:** usb
- **Special features:** 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)

## 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 Belgium*
*Store origin: BE*
*Last updated: 2026-05-20*