---
product_id: 372189946
title: "USB Power Blocker - Stops Charging, Allows Data (Twin Pack)"
brand: "portapow"
price: "฿1096"
currency: THB
in_stock: true
reviews_count: 13
category: "Porta Pow"
url: https://www.desertcart.co.th/products/372189946-usb-power-blocker-stops-charging-allows-data-twin-pack
store_origin: TH
region: Thailand
---

# Supports USB 2.0 data transfer Blocks 5V power line Compact, easy plug-in design USB Power Blocker - Stops Charging, Allows Data (Twin Pack)

**Brand:** portapow
**Price:** ฿1096
**Availability:** ✅ In Stock

## Summary

> 🔒 Protect your gear, keep your data flowing — power control made effortless!

## Quick Answers

- **What is this?** USB Power Blocker - Stops Charging, Allows Data (Twin Pack) by portapow
- **How much does it cost?** ฿1096 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/372189946-usb-power-blocker-stops-charging-allows-data-twin-pack)

## Best For

- portapow enthusiasts

## Why This Product

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

## Key Features

- • **Twin Pack Value:** Two compact adaptors for versatile device protection
- • **USB 2.0 Speed Support:** Reliable data transfer at up to 12Mbps
- • **Plug & Play Simplicity:** No cable hacking—just insert and protect instantly
- • **Power Blocker, Not Data Blocker:** Stops charging but keeps data flowing seamlessly
- • **Specialist Device Compatibility:** Ideal for 3D printers & Raspberry Pi setups

## Overview

The PortaPow USB Power Blocker is a USB-A male-to-female adaptor that disconnects the 5V power line while maintaining D+ and D- data lines, preventing unwanted charging while allowing USB 2.0 data transfer. Perfect for specialist applications like 3D printers and Raspberry Pi devices, this twin pack offers a compact, plug-and-play solution to protect your equipment from power-related damage without compromising data connectivity.

## Description

Cased Power Blocker.

Review: Essential Protection for Your Devices! - I recently started using the PortaPow USB Power Blocker with my micro USB cable for my 3D printer, and I have to say, it's been a game-changer! This little gadget does an excellent job of preventing my printer from pulling too much power from my sonic pad, which could potentially damage it. It stops charging while still allowing data transfer, ensuring that my devices stay safe and sound. Installation was a breeze - I simply plugged it in between my printer and the sonic pad, and it started working right away. Plus, it's super compact, so it doesn't take up much space. Overall, I'm incredibly impressed with the PortaPow USB Power Blocker. It's a simple yet effective solution that gives me peace of mind knowing that my devices are protected. Five stars from me!
Review: Does what it says on the tin. - Does exactly what it says is does. Prevents 5v power from reaching the device. Really only needed when dealing with self-powered devices that don't implement USB properly, which either try to backpower the host, or partially start only the 5v components. In the past I'd carve up a cable, and cut the 5v line, or modify the target device itself, and this is a bit easier of a solution. Things work well at 12Mbps (USB 1 "Full" speed). I have not tested with any 2.x devices, though the traces are pretty short, I would expect no issues. (All of my easily available 2.x devices are bus-powered, and they won't work for obvious reasons).

## Features

- This is NOT a data blocker, see PortaPow's other products if that is what you need
- This a USB-A male to female adaptor which has the D+, D- and 0V connected but the 5V disconnected, so power cannot pass through.
- Useful for specialist applications such as 3D Printers and Raspberry Pi where providing power results in undesirable effects
- Note a power blocker is not compatible with smartphones, tablets and many other devices. Please read the reviews to see situations where it does and does not work.
- Extra Value Twin Pack. Supports USB 2.0 Data Transfer.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B094G4P3P4 |
| Best Sellers Rank | #1,164 in USB Cables |
| Date First Available | March 12, 2016 |
| Item Weight | 0.317 ounces |
| Item model number | PPUSBPB04 |
| Manufacturer | PortaPow |
| Package Dimensions | 3.74 x 2.13 x 0.35 inches |

## Product Details

- **Brand:** PortaPow
- **Color:** Black
- **Compatible Devices:** 3D Printers
- **Connector Type:** USB
- **Item Weight:** 0.01 Kilograms

## Images

![USB Power Blocker - Stops Charging, Allows Data (Twin Pack) - Image 1](https://m.media-amazon.com/images/I/61uKgCm29bL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Essential Protection for Your Devices!
*by P***R on May 24, 2024*

I recently started using the PortaPow USB Power Blocker with my micro USB cable for my 3D printer, and I have to say, it's been a game-changer! This little gadget does an excellent job of preventing my printer from pulling too much power from my sonic pad, which could potentially damage it. It stops charging while still allowing data transfer, ensuring that my devices stay safe and sound. Installation was a breeze - I simply plugged it in between my printer and the sonic pad, and it started working right away. Plus, it's super compact, so it doesn't take up much space. Overall, I'm incredibly impressed with the PortaPow USB Power Blocker. It's a simple yet effective solution that gives me peace of mind knowing that my devices are protected. Five stars from me!

### ⭐⭐⭐⭐⭐ Does what it says on the tin.
*by L***O on December 16, 2025*

Does exactly what it says is does. Prevents 5v power from reaching the device. Really only needed when dealing with self-powered devices that don't implement USB properly, which either try to backpower the host, or partially start only the 5v components. In the past I'd carve up a cable, and cut the 5v line, or modify the target device itself, and this is a bit easier of a solution. Things work well at 12Mbps (USB 1 "Full" speed). I have not tested with any 2.x devices, though the traces are pretty short, I would expect no issues. (All of my easily available 2.x devices are bus-powered, and they won't work for obvious reasons).

### ⭐⭐⭐⭐⭐ Perfectly adequate to my needs
*by S***O on September 11, 2023*

I have purchased a twin pack of PortaPow blockers because I needed to connect an old, self-powered, device to my PC with a USB-A to USB-A cable and couldn't afford the risk of short-circuiting anything. I could modify the cables, but I'm not very good with that kind of skill. Fortunately I've found these on Amazon. I've been told that using a single blocker on the cable would be enough, but it works fine with both too. Data goes through flawlessly while power stays put. Just clarifying for those in doubt: this product is meant to block power, not data transfers! If you're looking for a data blocker, I believe the same company also provides those, but this isn't the same thing.

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- PortaPow USB Power Blocker - Stops Charging, Allows Data (Twin Pack)
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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-10*